diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/DeliveriesController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/DeliveriesController.cs
index a36e2e2..fbc2277 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/DeliveriesController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/DeliveriesController.cs
@@ -49,12 +49,23 @@ public sealed class DeliveriesController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("delivery:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<DeliveryOrderDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<DeliveryOrderDto>>> List([FromQuery] long? orderId, [FromQuery] DeliveryStatus? status, CancellationToken cancellationToken)
+    public async Task<ApiResponse<IReadOnlyList<DeliveryOrderDto>>> List(
+        [FromQuery] long? orderId,
+        [FromQuery] DeliveryStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
         var result = await _mediator.Send(new SearchDeliveryOrdersQuery
         {
             OrderId = orderId,
-            Status = status
+            Status = status,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
         }, cancellationToken);
 
         return ApiResponse<IReadOnlyList<DeliveryOrderDto>>.Ok(result);
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/MerchantsController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/MerchantsController.cs
index c24ec8d..545af0d 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/MerchantsController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/MerchantsController.cs
@@ -49,9 +49,22 @@ public sealed class MerchantsController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("merchant:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<MerchantDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<MerchantDto>>> List([FromQuery] MerchantStatus? status, CancellationToken cancellationToken)
+    public async Task<ApiResponse<IReadOnlyList<MerchantDto>>> List(
+        [FromQuery] MerchantStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
-        var result = await _mediator.Send(new SearchMerchantsQuery { Status = status }, cancellationToken);
+        var result = await _mediator.Send(new SearchMerchantsQuery
+        {
+            Status = status,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
+        }, cancellationToken);
         return ApiResponse<IReadOnlyList<MerchantDto>>.Ok(result);
     }
 
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/OrdersController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/OrdersController.cs
index f66b159..b14a915 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/OrdersController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/OrdersController.cs
@@ -55,14 +55,22 @@ public sealed class OrdersController : BaseApiController
         [FromQuery] OrderStatus? status,
         [FromQuery] PaymentStatus? paymentStatus,
         [FromQuery] string? orderNo,
-        CancellationToken cancellationToken)
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
         var result = await _mediator.Send(new SearchOrdersQuery
         {
             StoreId = storeId,
             Status = status,
             PaymentStatus = paymentStatus,
-            OrderNo = orderNo
+            OrderNo = orderNo,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
         }, cancellationToken);
 
         return ApiResponse<IReadOnlyList<OrderDto>>.Ok(result);
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/PaymentsController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/PaymentsController.cs
index 93ca700..5f91315 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/PaymentsController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/PaymentsController.cs
@@ -49,12 +49,23 @@ public sealed class PaymentsController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("payment:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<PaymentDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<PaymentDto>>> List([FromQuery] long? orderId, [FromQuery] PaymentStatus? status, CancellationToken cancellationToken)
+    public async Task<ApiResponse<IReadOnlyList<PaymentDto>>> List(
+        [FromQuery] long? orderId,
+        [FromQuery] PaymentStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
         var result = await _mediator.Send(new SearchPaymentsQuery
         {
             OrderId = orderId,
-            Status = status
+            Status = status,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
         }, cancellationToken);
 
         return ApiResponse<IReadOnlyList<PaymentDto>>.Ok(result);
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
index 4c8d42c..949cf0b 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
@@ -49,13 +49,25 @@ public sealed class ProductsController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("product:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<ProductDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<ProductDto>>> List([FromQuery] long? storeId, [FromQuery] long? categoryId, [FromQuery] ProductStatus? status, CancellationToken cancellationToken)
+    public async Task<ApiResponse<IReadOnlyList<ProductDto>>> List(
+        [FromQuery] long? storeId,
+        [FromQuery] long? categoryId,
+        [FromQuery] ProductStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
         var result = await _mediator.Send(new SearchProductsQuery
         {
             StoreId = storeId,
             CategoryId = categoryId,
-            Status = status
+            Status = status,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
         }, cancellationToken);
 
         return ApiResponse<IReadOnlyList<ProductDto>>.Ok(result);
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/StoresController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/StoresController.cs
index e485df6..5680396 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/StoresController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/StoresController.cs
@@ -49,12 +49,23 @@ public sealed class StoresController : BaseApiController
     [HttpGet]
     [PermissionAuthorize("store:read")]
     [ProducesResponseType(typeof(ApiResponse<IReadOnlyList<StoreDto>>), StatusCodes.Status200OK)]
-    public async Task<ApiResponse<IReadOnlyList<StoreDto>>> List([FromQuery] long? merchantId, [FromQuery] StoreStatus? status, CancellationToken cancellationToken)
+    public async Task<ApiResponse<IReadOnlyList<StoreDto>>> List(
+        [FromQuery] long? merchantId,
+        [FromQuery] StoreStatus? status,
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 20,
+        [FromQuery] string? sortBy = null,
+        [FromQuery] bool sortDesc = true,
+        CancellationToken cancellationToken = default)
     {
         var result = await _mediator.Send(new SearchStoresQuery
         {
             MerchantId = merchantId,
-            Status = status
+            Status = status,
+            Page = page,
+            PageSize = pageSize,
+            SortBy = sortBy,
+            SortDescending = sortDesc
         }, cancellationToken);
 
         return ApiResponse<IReadOnlyList<StoreDto>>.Ok(result);
diff --git a/src/Application/TakeoutSaaS.Application/App/Common/Behaviors/ValidationBehavior.cs b/src/Application/TakeoutSaaS.Application/App/Common/Behaviors/ValidationBehavior.cs
new file mode 100644
index 0000000..177ebd9
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Common/Behaviors/ValidationBehavior.cs
@@ -0,0 +1,35 @@
+using FluentValidation;
+using MediatR;
+
+namespace TakeoutSaaS.Application.App.Common.Behaviors;
+
+/// <summary>
+/// MediatR 请求验证行为，统一触发 FluentValidation。
+/// </summary>
+/// <typeparam name="TRequest">请求类型。</typeparam>
+/// <typeparam name="TResponse">响应类型。</typeparam>
+public sealed class ValidationBehavior<TRequest, TResponse>(IEnumerable<IValidator<TRequest>> validators) : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : notnull, IRequest<TResponse>
+{
+    private readonly IEnumerable<IValidator<TRequest>> _validators = validators;
+
+    /// <summary>
+    /// 执行验证并在通过时继续后续处理。
+    /// </summary>
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        if (_validators.Any())
+        {
+            var context = new ValidationContext<TRequest>(request);
+            var validationResults = await Task.WhenAll(_validators.Select(v => v.ValidateAsync(context, cancellationToken)));
+            var failures = validationResults.SelectMany(r => r.Errors).Where(f => f is not null).ToList();
+
+            if (failures.Count > 0)
+            {
+                throw new ValidationException(failures);
+            }
+        }
+
+        return await next();
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Dto/DeliveryOrderDto.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Dto/DeliveryOrderDto.cs
index 21fc36c..641d67a 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Dto/DeliveryOrderDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Dto/DeliveryOrderDto.cs
@@ -81,4 +81,9 @@ public sealed class DeliveryOrderDto
     /// 事件列表。
     /// </summary>
     public IReadOnlyList<DeliveryEventDto> Events { get; init; } = Array.Empty<DeliveryEventDto>();
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/CreateDeliveryOrderCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/CreateDeliveryOrderCommandHandler.cs
index 8e775e9..1a67240 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/CreateDeliveryOrderCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/CreateDeliveryOrderCommandHandler.cs
@@ -56,6 +56,7 @@ public sealed class CreateDeliveryOrderCommandHandler(IDeliveryRepository delive
         PickedUpAt = deliveryOrder.PickedUpAt,
         DeliveredAt = deliveryOrder.DeliveredAt,
         FailureReason = deliveryOrder.FailureReason,
+        CreatedAt = deliveryOrder.CreatedAt,
         Events = events.Select(x => new DeliveryEventDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/GetDeliveryOrderByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/GetDeliveryOrderByIdQueryHandler.cs
index 8d047de..24e425f 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/GetDeliveryOrderByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/GetDeliveryOrderByIdQueryHandler.cs
@@ -47,6 +47,7 @@ public sealed class GetDeliveryOrderByIdQueryHandler(
         PickedUpAt = deliveryOrder.PickedUpAt,
         DeliveredAt = deliveryOrder.DeliveredAt,
         FailureReason = deliveryOrder.FailureReason,
+        CreatedAt = deliveryOrder.CreatedAt,
         Events = events.Select(x => new DeliveryEventDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs
index 5dea6a9..f0b3750 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/SearchDeliveryOrdersQueryHandler.cs
@@ -23,7 +23,13 @@ public sealed class SearchDeliveryOrdersQueryHandler(
         var tenantId = _tenantProvider.GetCurrentTenantId();
         var orders = await _deliveryRepository.SearchAsync(tenantId, request.Status, request.OrderId, cancellationToken);
 
-        return orders.Select(order => new DeliveryOrderDto
+        var sorted = ApplySorting(orders, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .ToList();
+
+        return paged.Select(order => new DeliveryOrderDto
         {
             Id = order.Id,
             TenantId = order.TenantId,
@@ -37,7 +43,21 @@ public sealed class SearchDeliveryOrdersQueryHandler(
             DispatchedAt = order.DispatchedAt,
             PickedUpAt = order.PickedUpAt,
             DeliveredAt = order.DeliveredAt,
-            FailureReason = order.FailureReason
+            FailureReason = order.FailureReason,
+            CreatedAt = order.CreatedAt
         }).ToList();
     }
+
+    private static IOrderedEnumerable<Domain.Deliveries.Entities.DeliveryOrder> ApplySorting(
+        IReadOnlyCollection<Domain.Deliveries.Entities.DeliveryOrder> orders,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "status" => sortDescending ? orders.OrderByDescending(x => x.Status) : orders.OrderBy(x => x.Status),
+            "provider" => sortDescending ? orders.OrderByDescending(x => x.Provider) : orders.OrderBy(x => x.Provider),
+            _ => sortDescending ? orders.OrderByDescending(x => x.CreatedAt) : orders.OrderBy(x => x.CreatedAt)
+        };
+    }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/UpdateDeliveryOrderCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/UpdateDeliveryOrderCommandHandler.cs
index 424e2a9..c8df929 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/UpdateDeliveryOrderCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Handlers/UpdateDeliveryOrderCommandHandler.cs
@@ -66,6 +66,7 @@ public sealed class UpdateDeliveryOrderCommandHandler(
         PickedUpAt = deliveryOrder.PickedUpAt,
         DeliveredAt = deliveryOrder.DeliveredAt,
         FailureReason = deliveryOrder.FailureReason,
+        CreatedAt = deliveryOrder.CreatedAt,
         Events = events.Select(x => new DeliveryEventDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs
index 53d439c..7175ac3 100644
--- a/src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Queries/SearchDeliveryOrdersQuery.cs
@@ -18,4 +18,24 @@ public sealed class SearchDeliveryOrdersQuery : IRequest<IReadOnlyList<DeliveryO
     /// 配送状态。
     /// </summary>
     public DeliveryStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（createdAt/status/provider）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/CreateDeliveryOrderCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/CreateDeliveryOrderCommandValidator.cs
new file mode 100644
index 0000000..765e47f
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/CreateDeliveryOrderCommandValidator.cs
@@ -0,0 +1,23 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Deliveries.Commands;
+
+namespace TakeoutSaaS.Application.App.Deliveries.Validators;
+
+/// <summary>
+/// 创建配送单命令验证器。
+/// </summary>
+public sealed class CreateDeliveryOrderCommandValidator : AbstractValidator<CreateDeliveryOrderCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreateDeliveryOrderCommandValidator()
+    {
+        RuleFor(x => x.OrderId).GreaterThan(0);
+        RuleFor(x => x.ProviderOrderId).MaximumLength(64);
+        RuleFor(x => x.CourierName).MaximumLength(64);
+        RuleFor(x => x.CourierPhone).MaximumLength(32);
+        RuleFor(x => x.FailureReason).MaximumLength(256);
+        RuleFor(x => x.DeliveryFee).GreaterThanOrEqualTo(0).When(x => x.DeliveryFee.HasValue);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/SearchDeliveryOrdersQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/SearchDeliveryOrdersQueryValidator.cs
new file mode 100644
index 0000000..2119152
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/SearchDeliveryOrdersQueryValidator.cs
@@ -0,0 +1,20 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Deliveries.Queries;
+
+namespace TakeoutSaaS.Application.App.Deliveries.Validators;
+
+/// <summary>
+/// 配送单列表查询验证器。
+/// </summary>
+public sealed class SearchDeliveryOrdersQueryValidator : AbstractValidator<SearchDeliveryOrdersQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchDeliveryOrdersQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/UpdateDeliveryOrderCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/UpdateDeliveryOrderCommandValidator.cs
new file mode 100644
index 0000000..e2cbc19
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Deliveries/Validators/UpdateDeliveryOrderCommandValidator.cs
@@ -0,0 +1,24 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Deliveries.Commands;
+
+namespace TakeoutSaaS.Application.App.Deliveries.Validators;
+
+/// <summary>
+/// 更新配送单命令验证器。
+/// </summary>
+public sealed class UpdateDeliveryOrderCommandValidator : AbstractValidator<UpdateDeliveryOrderCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateDeliveryOrderCommandValidator()
+    {
+        RuleFor(x => x.DeliveryOrderId).GreaterThan(0);
+        RuleFor(x => x.OrderId).GreaterThan(0);
+        RuleFor(x => x.ProviderOrderId).MaximumLength(64);
+        RuleFor(x => x.CourierName).MaximumLength(64);
+        RuleFor(x => x.CourierPhone).MaximumLength(32);
+        RuleFor(x => x.FailureReason).MaximumLength(256);
+        RuleFor(x => x.DeliveryFee).GreaterThanOrEqualTo(0).When(x => x.DeliveryFee.HasValue);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Extensions/AppApplicationServiceCollectionExtensions.cs b/src/Application/TakeoutSaaS.Application/App/Extensions/AppApplicationServiceCollectionExtensions.cs
index 61d259f..62284b1 100644
--- a/src/Application/TakeoutSaaS.Application/App/Extensions/AppApplicationServiceCollectionExtensions.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Extensions/AppApplicationServiceCollectionExtensions.cs
@@ -1,6 +1,8 @@
 using System.Reflection;
+using FluentValidation;
 using MediatR;
 using Microsoft.Extensions.DependencyInjection;
+using TakeoutSaaS.Application.App.Common.Behaviors;
 
 namespace TakeoutSaaS.Application.App.Extensions;
 
@@ -17,6 +19,8 @@ public static class AppApplicationServiceCollectionExtensions
     public static IServiceCollection AddAppApplication(this IServiceCollection services)
     {
         services.AddMediatR(Assembly.GetExecutingAssembly());
+        services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
+        services.AddTransient(typeof(IPipelineBehavior<,>), typeof(ValidationBehavior<,>));
 
         return services;
     }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Dto/MerchantDto.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Dto/MerchantDto.cs
index d1552c8..6124ec7 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Dto/MerchantDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Dto/MerchantDto.cs
@@ -60,4 +60,9 @@ public sealed class MerchantDto
     /// 入驻时间。
     /// </summary>
     public DateTime? JoinedAt { get; init; }
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCommandHandler.cs
index 4b32e70..70c0982 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/CreateMerchantCommandHandler.cs
@@ -49,6 +49,7 @@ public sealed class CreateMerchantCommandHandler(IMerchantRepository merchantRep
         ContactPhone = merchant.ContactPhone,
         ContactEmail = merchant.ContactEmail,
         Status = merchant.Status,
-        JoinedAt = merchant.JoinedAt
+        JoinedAt = merchant.JoinedAt,
+        CreatedAt = merchant.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantByIdQueryHandler.cs
index f689743..3c2313f 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantByIdQueryHandler.cs
@@ -36,7 +36,8 @@ public sealed class GetMerchantByIdQueryHandler(IMerchantRepository merchantRepo
             ContactPhone = merchant.ContactPhone,
             ContactEmail = merchant.ContactEmail,
             Status = merchant.Status,
-            JoinedAt = merchant.JoinedAt
+            JoinedAt = merchant.JoinedAt,
+            CreatedAt = merchant.CreatedAt
         };
     }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/SearchMerchantsQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/SearchMerchantsQueryHandler.cs
index bfd2f9b..71d18e3 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/SearchMerchantsQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/SearchMerchantsQueryHandler.cs
@@ -23,20 +23,44 @@ public sealed class SearchMerchantsQueryHandler(
         var tenantId = _tenantProvider.GetCurrentTenantId();
         var merchants = await _merchantRepository.SearchAsync(tenantId, request.Status, cancellationToken);
 
-        return merchants
-            .Select(merchant => new MerchantDto
-            {
-                Id = merchant.Id,
-                TenantId = merchant.TenantId,
-                BrandName = merchant.BrandName,
-                BrandAlias = merchant.BrandAlias,
-                LogoUrl = merchant.LogoUrl,
-                Category = merchant.Category,
-                ContactPhone = merchant.ContactPhone,
-                ContactEmail = merchant.ContactEmail,
-                Status = merchant.Status,
-                JoinedAt = merchant.JoinedAt
-            })
+        var sorted = ApplySorting(merchants, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
             .ToList();
+
+        return paged.Select(merchant => new MerchantDto
+        {
+            Id = merchant.Id,
+            TenantId = merchant.TenantId,
+            BrandName = merchant.BrandName,
+            BrandAlias = merchant.BrandAlias,
+            LogoUrl = merchant.LogoUrl,
+            Category = merchant.Category,
+            ContactPhone = merchant.ContactPhone,
+            ContactEmail = merchant.ContactEmail,
+            Status = merchant.Status,
+            JoinedAt = merchant.JoinedAt,
+            CreatedAt = merchant.CreatedAt
+        }).ToList();
+    }
+
+    private static IOrderedEnumerable<Domain.Merchants.Entities.Merchant> ApplySorting(
+        IReadOnlyCollection<Domain.Merchants.Entities.Merchant> merchants,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "brandname" => sortDescending
+                ? merchants.OrderByDescending(x => x.BrandName)
+                : merchants.OrderBy(x => x.BrandName),
+            "status" => sortDescending
+                ? merchants.OrderByDescending(x => x.Status)
+                : merchants.OrderBy(x => x.Status),
+            _ => sortDescending
+                ? merchants.OrderByDescending(x => x.CreatedAt)
+                : merchants.OrderBy(x => x.CreatedAt)
+        };
     }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantCommandHandler.cs
index d825b72..38753c9 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/UpdateMerchantCommandHandler.cs
@@ -60,6 +60,7 @@ public sealed class UpdateMerchantCommandHandler(
         ContactPhone = merchant.ContactPhone,
         ContactEmail = merchant.ContactEmail,
         Status = merchant.Status,
-        JoinedAt = merchant.JoinedAt
+        JoinedAt = merchant.JoinedAt,
+        CreatedAt = merchant.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Queries/SearchMerchantsQuery.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Queries/SearchMerchantsQuery.cs
index 3ec7561..b8a8b1a 100644
--- a/src/Application/TakeoutSaaS.Application/App/Merchants/Queries/SearchMerchantsQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Queries/SearchMerchantsQuery.cs
@@ -13,4 +13,24 @@ public sealed class SearchMerchantsQuery : IRequest<IReadOnlyList<MerchantDto>>
     /// 按状态过滤。
     /// </summary>
     public MerchantStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码（从 1 开始）。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（brandName/status/createdAt）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/CreateMerchantCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/CreateMerchantCommandValidator.cs
new file mode 100644
index 0000000..bd930d7
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/CreateMerchantCommandValidator.cs
@@ -0,0 +1,23 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Merchants.Commands;
+
+namespace TakeoutSaaS.Application.App.Merchants.Validators;
+
+/// <summary>
+/// 创建商户命令验证器。
+/// </summary>
+public sealed class CreateMerchantCommandValidator : AbstractValidator<CreateMerchantCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreateMerchantCommandValidator()
+    {
+        RuleFor(x => x.BrandName).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.BrandAlias).MaximumLength(64);
+        RuleFor(x => x.LogoUrl).MaximumLength(256);
+        RuleFor(x => x.Category).MaximumLength(64);
+        RuleFor(x => x.ContactPhone).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.ContactEmail).EmailAddress().When(x => !string.IsNullOrWhiteSpace(x.ContactEmail));
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/SearchMerchantsQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/SearchMerchantsQueryValidator.cs
new file mode 100644
index 0000000..e14707f
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/SearchMerchantsQueryValidator.cs
@@ -0,0 +1,20 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Merchants.Queries;
+
+namespace TakeoutSaaS.Application.App.Merchants.Validators;
+
+/// <summary>
+/// 商户列表查询验证器。
+/// </summary>
+public sealed class SearchMerchantsQueryValidator : AbstractValidator<SearchMerchantsQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchMerchantsQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/UpdateMerchantCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/UpdateMerchantCommandValidator.cs
new file mode 100644
index 0000000..6781a0b
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Merchants/Validators/UpdateMerchantCommandValidator.cs
@@ -0,0 +1,24 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Merchants.Commands;
+
+namespace TakeoutSaaS.Application.App.Merchants.Validators;
+
+/// <summary>
+/// 更新商户命令验证器。
+/// </summary>
+public sealed class UpdateMerchantCommandValidator : AbstractValidator<UpdateMerchantCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateMerchantCommandValidator()
+    {
+        RuleFor(x => x.MerchantId).GreaterThan(0);
+        RuleFor(x => x.BrandName).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.BrandAlias).MaximumLength(64);
+        RuleFor(x => x.LogoUrl).MaximumLength(256);
+        RuleFor(x => x.Category).MaximumLength(64);
+        RuleFor(x => x.ContactPhone).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.ContactEmail).EmailAddress().When(x => !string.IsNullOrWhiteSpace(x.ContactEmail));
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Dto/OrderDto.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Dto/OrderDto.cs
index 0358f7c..6add72b 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Dto/OrderDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Dto/OrderDto.cs
@@ -138,4 +138,9 @@ public sealed class OrderDto
     /// 退款申请。
     /// </summary>
     public IReadOnlyList<RefundRequestDto> Refunds { get; init; } = Array.Empty<RefundRequestDto>();
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/CreateOrderCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/CreateOrderCommandHandler.cs
index 057b018..a7b1289 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/CreateOrderCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/CreateOrderCommandHandler.cs
@@ -151,6 +151,7 @@ public sealed class CreateOrderCommandHandler(
                 RequestedAt = x.RequestedAt,
                 ProcessedAt = x.ProcessedAt,
                 ReviewNotes = x.ReviewNotes
-            }).ToList()
+            }).ToList(),
+            CreatedAt = order.CreatedAt
         };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/GetOrderByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/GetOrderByIdQueryHandler.cs
index dbdd1c2..5d6b791 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/GetOrderByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/GetOrderByIdQueryHandler.cs
@@ -97,6 +97,7 @@ public sealed class GetOrderByIdQueryHandler(
                 RequestedAt = x.RequestedAt,
                 ProcessedAt = x.ProcessedAt,
                 ReviewNotes = x.ReviewNotes
-            }).ToList()
+            }).ToList(),
+            CreatedAt = order.CreatedAt
         };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs
index d1b054a..caf2a50 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/SearchOrdersQueryHandler.cs
@@ -36,7 +36,13 @@ public sealed class SearchOrdersQueryHandler(
                 .ToList();
         }
 
-        return orders.Select(order => new OrderDto
+        var sorted = ApplySorting(orders, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .ToList();
+
+        return paged.Select(order => new OrderDto
         {
             Id = order.Id,
             TenantId = order.TenantId,
@@ -59,7 +65,22 @@ public sealed class SearchOrdersQueryHandler(
             FinishedAt = order.FinishedAt,
             CancelledAt = order.CancelledAt,
             CancelReason = order.CancelReason,
-            Remark = order.Remark
+            Remark = order.Remark,
+            CreatedAt = order.CreatedAt
         }).ToList();
     }
+
+    private static IOrderedEnumerable<Domain.Orders.Entities.Order> ApplySorting(
+        IReadOnlyCollection<Domain.Orders.Entities.Order> orders,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "paidat" => sortDescending ? orders.OrderByDescending(x => x.PaidAt) : orders.OrderBy(x => x.PaidAt),
+            "status" => sortDescending ? orders.OrderByDescending(x => x.Status) : orders.OrderBy(x => x.Status),
+            "payableamount" => sortDescending ? orders.OrderByDescending(x => x.PayableAmount) : orders.OrderBy(x => x.PayableAmount),
+            _ => sortDescending ? orders.OrderByDescending(x => x.CreatedAt) : orders.OrderBy(x => x.CreatedAt)
+        };
+    }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/UpdateOrderCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/UpdateOrderCommandHandler.cs
index 3901fd9..46df4ed 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/UpdateOrderCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Handlers/UpdateOrderCommandHandler.cs
@@ -129,6 +129,7 @@ public sealed class UpdateOrderCommandHandler(
                 RequestedAt = x.RequestedAt,
                 ProcessedAt = x.ProcessedAt,
                 ReviewNotes = x.ReviewNotes
-            }).ToList()
+            }).ToList(),
+            CreatedAt = order.CreatedAt
         };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Queries/SearchOrdersQuery.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Queries/SearchOrdersQuery.cs
index 99fa7b3..6d33583 100644
--- a/src/Application/TakeoutSaaS.Application/App/Orders/Queries/SearchOrdersQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Queries/SearchOrdersQuery.cs
@@ -29,4 +29,24 @@ public sealed class SearchOrdersQuery : IRequest<IReadOnlyList<OrderDto>>
     /// 订单号（模糊或精确，由调用方控制）。
     /// </summary>
     public string? OrderNo { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（createdAt/paidAt/status/payableAmount）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Validators/CreateOrderCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/CreateOrderCommandValidator.cs
new file mode 100644
index 0000000..729d166
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/CreateOrderCommandValidator.cs
@@ -0,0 +1,46 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Orders.Commands;
+
+namespace TakeoutSaaS.Application.App.Orders.Validators;
+
+/// <summary>
+/// 创建订单命令验证器。
+/// </summary>
+public sealed class CreateOrderCommandValidator : AbstractValidator<CreateOrderCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreateOrderCommandValidator()
+    {
+        RuleFor(x => x.OrderNo).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.StoreId).GreaterThan(0);
+        RuleFor(x => x.CustomerPhone).MaximumLength(32);
+        RuleFor(x => x.CustomerName).MaximumLength(64);
+        RuleFor(x => x.TableNo).MaximumLength(32);
+        RuleFor(x => x.QueueNumber).MaximumLength(32);
+        RuleFor(x => x.CancelReason).MaximumLength(256);
+        RuleFor(x => x.Remark).MaximumLength(512);
+        RuleFor(x => x.ItemsAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.DiscountAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.PayableAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.PaidAmount).GreaterThanOrEqualTo(0);
+
+        RuleFor(x => x.Items)
+            .NotEmpty()
+            .WithMessage("订单明细不能为空");
+
+        RuleForEach(x => x.Items).ChildRules(item =>
+        {
+            item.RuleFor(i => i.ProductId).GreaterThan(0);
+            item.RuleFor(i => i.ProductName).NotEmpty().MaximumLength(128);
+            item.RuleFor(i => i.SkuName).MaximumLength(128);
+            item.RuleFor(i => i.Unit).MaximumLength(16);
+            item.RuleFor(i => i.Quantity).GreaterThan(0);
+            item.RuleFor(i => i.UnitPrice).GreaterThanOrEqualTo(0);
+            item.RuleFor(i => i.DiscountAmount).GreaterThanOrEqualTo(0);
+            item.RuleFor(i => i.SubTotal).GreaterThanOrEqualTo(0);
+            item.RuleFor(i => i.AttributesJson).MaximumLength(4000);
+        });
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Validators/SearchOrdersQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/SearchOrdersQueryValidator.cs
new file mode 100644
index 0000000..b5dac41
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/SearchOrdersQueryValidator.cs
@@ -0,0 +1,21 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Orders.Queries;
+
+namespace TakeoutSaaS.Application.App.Orders.Validators;
+
+/// <summary>
+/// 订单列表查询验证器。
+/// </summary>
+public sealed class SearchOrdersQueryValidator : AbstractValidator<SearchOrdersQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchOrdersQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+        RuleFor(x => x.OrderNo).MaximumLength(32);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Orders/Validators/UpdateOrderCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/UpdateOrderCommandValidator.cs
new file mode 100644
index 0000000..2dba2f7
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Orders/Validators/UpdateOrderCommandValidator.cs
@@ -0,0 +1,30 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Orders.Commands;
+
+namespace TakeoutSaaS.Application.App.Orders.Validators;
+
+/// <summary>
+/// 更新订单命令验证器。
+/// </summary>
+public sealed class UpdateOrderCommandValidator : AbstractValidator<UpdateOrderCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateOrderCommandValidator()
+    {
+        RuleFor(x => x.OrderId).GreaterThan(0);
+        RuleFor(x => x.OrderNo).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.StoreId).GreaterThan(0);
+        RuleFor(x => x.CustomerPhone).MaximumLength(32);
+        RuleFor(x => x.CustomerName).MaximumLength(64);
+        RuleFor(x => x.TableNo).MaximumLength(32);
+        RuleFor(x => x.QueueNumber).MaximumLength(32);
+        RuleFor(x => x.CancelReason).MaximumLength(256);
+        RuleFor(x => x.Remark).MaximumLength(512);
+        RuleFor(x => x.ItemsAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.DiscountAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.PayableAmount).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.PaidAmount).GreaterThanOrEqualTo(0);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Dto/PaymentDto.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Dto/PaymentDto.cs
index 807d0f1..d127427 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Dto/PaymentDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Dto/PaymentDto.cs
@@ -71,4 +71,9 @@ public sealed class PaymentDto
     /// 退款记录。
     /// </summary>
     public IReadOnlyList<PaymentRefundDto> Refunds { get; init; } = Array.Empty<PaymentRefundDto>();
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/CreatePaymentCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/CreatePaymentCommandHandler.cs
index 463d903..793a2a9 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/CreatePaymentCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/CreatePaymentCommandHandler.cs
@@ -52,6 +52,7 @@ public sealed class CreatePaymentCommandHandler(IPaymentRepository paymentReposi
         PaidAt = payment.PaidAt,
         Remark = payment.Remark,
         Payload = payment.Payload,
+        CreatedAt = payment.CreatedAt,
         Refunds = refunds.Select(x => new PaymentRefundDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/GetPaymentByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/GetPaymentByIdQueryHandler.cs
index 225697c..8e5db7a 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/GetPaymentByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/GetPaymentByIdQueryHandler.cs
@@ -45,6 +45,7 @@ public sealed class GetPaymentByIdQueryHandler(
         PaidAt = payment.PaidAt,
         Remark = payment.Remark,
         Payload = payment.Payload,
+        CreatedAt = payment.CreatedAt,
         Refunds = refunds.Select(x => new PaymentRefundDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/SearchPaymentsQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/SearchPaymentsQueryHandler.cs
index 45ff7cb..be6c10a 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/SearchPaymentsQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/SearchPaymentsQueryHandler.cs
@@ -1,6 +1,7 @@
 using MediatR;
 using TakeoutSaaS.Application.App.Payments.Dto;
 using TakeoutSaaS.Application.App.Payments.Queries;
+using TakeoutSaaS.Domain.Payments.Entities;
 using TakeoutSaaS.Domain.Payments.Repositories;
 using TakeoutSaaS.Shared.Abstractions.Tenancy;
 
@@ -28,7 +29,13 @@ public sealed class SearchPaymentsQueryHandler(
             payments = payments.Where(x => x.OrderId == request.OrderId.Value).ToList();
         }
 
-        return payments.Select(payment => new PaymentDto
+        var sorted = ApplySorting(payments, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .ToList();
+
+        return paged.Select(payment => new PaymentDto
         {
             Id = payment.Id,
             TenantId = payment.TenantId,
@@ -40,7 +47,22 @@ public sealed class SearchPaymentsQueryHandler(
             ChannelTransactionId = payment.ChannelTransactionId,
             PaidAt = payment.PaidAt,
             Remark = payment.Remark,
-            Payload = payment.Payload
+            Payload = payment.Payload,
+            CreatedAt = payment.CreatedAt
         }).ToList();
     }
+
+    private static IOrderedEnumerable<Domain.Payments.Entities.PaymentRecord> ApplySorting(
+        IReadOnlyCollection<Domain.Payments.Entities.PaymentRecord> payments,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "paidat" => sortDescending ? payments.OrderByDescending(x => x.PaidAt) : payments.OrderBy(x => x.PaidAt),
+            "status" => sortDescending ? payments.OrderByDescending(x => x.Status) : payments.OrderBy(x => x.Status),
+            "amount" => sortDescending ? payments.OrderByDescending(x => x.Amount) : payments.OrderBy(x => x.Amount),
+            _ => sortDescending ? payments.OrderByDescending(x => x.CreatedAt) : payments.OrderBy(x => x.CreatedAt)
+        };
+    }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/UpdatePaymentCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/UpdatePaymentCommandHandler.cs
index f55a37d..e0e9fec 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/UpdatePaymentCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Handlers/UpdatePaymentCommandHandler.cs
@@ -62,6 +62,7 @@ public sealed class UpdatePaymentCommandHandler(
         PaidAt = payment.PaidAt,
         Remark = payment.Remark,
         Payload = payment.Payload,
+        CreatedAt = payment.CreatedAt,
         Refunds = refunds.Select(x => new PaymentRefundDto
         {
             Id = x.Id,
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Queries/SearchPaymentsQuery.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Queries/SearchPaymentsQuery.cs
index 91b5bad..efe8861 100644
--- a/src/Application/TakeoutSaaS.Application/App/Payments/Queries/SearchPaymentsQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Queries/SearchPaymentsQuery.cs
@@ -18,4 +18,24 @@ public sealed class SearchPaymentsQuery : IRequest<IReadOnlyList<PaymentDto>>
     /// 支付状态。
     /// </summary>
     public PaymentStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（createdAt/paidAt/status/amount）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Validators/CreatePaymentCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/CreatePaymentCommandValidator.cs
new file mode 100644
index 0000000..f7e7abb
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/CreatePaymentCommandValidator.cs
@@ -0,0 +1,22 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Payments.Commands;
+
+namespace TakeoutSaaS.Application.App.Payments.Validators;
+
+/// <summary>
+/// 创建支付记录命令验证器。
+/// </summary>
+public sealed class CreatePaymentCommandValidator : AbstractValidator<CreatePaymentCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreatePaymentCommandValidator()
+    {
+        RuleFor(x => x.OrderId).GreaterThan(0);
+        RuleFor(x => x.Amount).GreaterThan(0);
+        RuleFor(x => x.TradeNo).MaximumLength(64);
+        RuleFor(x => x.ChannelTransactionId).MaximumLength(64);
+        RuleFor(x => x.Remark).MaximumLength(256);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Validators/SearchPaymentsQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/SearchPaymentsQueryValidator.cs
new file mode 100644
index 0000000..fe7580e
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/SearchPaymentsQueryValidator.cs
@@ -0,0 +1,20 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Payments.Queries;
+
+namespace TakeoutSaaS.Application.App.Payments.Validators;
+
+/// <summary>
+/// 支付记录查询验证器。
+/// </summary>
+public sealed class SearchPaymentsQueryValidator : AbstractValidator<SearchPaymentsQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchPaymentsQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Payments/Validators/UpdatePaymentCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/UpdatePaymentCommandValidator.cs
new file mode 100644
index 0000000..997e07b
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Payments/Validators/UpdatePaymentCommandValidator.cs
@@ -0,0 +1,23 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Payments.Commands;
+
+namespace TakeoutSaaS.Application.App.Payments.Validators;
+
+/// <summary>
+/// 更新支付记录命令验证器。
+/// </summary>
+public sealed class UpdatePaymentCommandValidator : AbstractValidator<UpdatePaymentCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdatePaymentCommandValidator()
+    {
+        RuleFor(x => x.PaymentId).GreaterThan(0);
+        RuleFor(x => x.OrderId).GreaterThan(0);
+        RuleFor(x => x.Amount).GreaterThan(0);
+        RuleFor(x => x.TradeNo).MaximumLength(64);
+        RuleFor(x => x.ChannelTransactionId).MaximumLength(64);
+        RuleFor(x => x.Remark).MaximumLength(256);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
index 7661594..bfcd321 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
@@ -112,4 +112,9 @@ public sealed class ProductDto
     /// 是否推荐。
     /// </summary>
     public bool IsFeatured { get; init; }
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/CreateProductCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/CreateProductCommandHandler.cs
index 46201fa..2bf1e33 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/CreateProductCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/CreateProductCommandHandler.cs
@@ -72,6 +72,7 @@ public sealed class CreateProductCommandHandler(IProductRepository productReposi
         EnableDineIn = product.EnableDineIn,
         EnablePickup = product.EnablePickup,
         EnableDelivery = product.EnableDelivery,
-        IsFeatured = product.IsFeatured
+        IsFeatured = product.IsFeatured,
+        CreatedAt = product.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
index 018c325..c3b6a60 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
@@ -47,6 +47,7 @@ public sealed class GetProductByIdQueryHandler(
         EnableDineIn = product.EnableDineIn,
         EnablePickup = product.EnablePickup,
         EnableDelivery = product.EnableDelivery,
-        IsFeatured = product.IsFeatured
+        IsFeatured = product.IsFeatured,
+        CreatedAt = product.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
index d24784e..5527166 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
@@ -28,7 +28,27 @@ public sealed class SearchProductsQueryHandler(
             products = products.Where(x => x.StoreId == request.StoreId.Value).ToList();
         }
 
-        return products.Select(MapToDto).ToList();
+        var sorted = ApplySorting(products, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .ToList();
+
+        return paged.Select(MapToDto).ToList();
+    }
+
+    private static IOrderedEnumerable<Domain.Products.Entities.Product> ApplySorting(
+        IReadOnlyCollection<Domain.Products.Entities.Product> products,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "name" => sortDescending ? products.OrderByDescending(x => x.Name) : products.OrderBy(x => x.Name),
+            "price" => sortDescending ? products.OrderByDescending(x => x.Price) : products.OrderBy(x => x.Price),
+            "status" => sortDescending ? products.OrderByDescending(x => x.Status) : products.OrderBy(x => x.Status),
+            _ => sortDescending ? products.OrderByDescending(x => x.CreatedAt) : products.OrderBy(x => x.CreatedAt)
+        };
     }
 
     private static ProductDto MapToDto(Domain.Products.Entities.Product product) => new()
@@ -52,6 +72,7 @@ public sealed class SearchProductsQueryHandler(
         EnableDineIn = product.EnableDineIn,
         EnablePickup = product.EnablePickup,
         EnableDelivery = product.EnableDelivery,
-        IsFeatured = product.IsFeatured
+        IsFeatured = product.IsFeatured,
+        CreatedAt = product.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UpdateProductCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UpdateProductCommandHandler.cs
index df33a23..e616788 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UpdateProductCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UpdateProductCommandHandler.cs
@@ -82,6 +82,7 @@ public sealed class UpdateProductCommandHandler(
         EnableDineIn = product.EnableDineIn,
         EnablePickup = product.EnablePickup,
         EnableDelivery = product.EnableDelivery,
-        IsFeatured = product.IsFeatured
+        IsFeatured = product.IsFeatured,
+        CreatedAt = product.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Queries/SearchProductsQuery.cs b/src/Application/TakeoutSaaS.Application/App/Products/Queries/SearchProductsQuery.cs
index 07541c8..e7d3c55 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Queries/SearchProductsQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Queries/SearchProductsQuery.cs
@@ -23,4 +23,24 @@ public sealed class SearchProductsQuery : IRequest<IReadOnlyList<ProductDto>>
     /// 状态过滤。
     /// </summary>
     public ProductStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（name/price/status/createdAt）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/CreateProductCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/CreateProductCommandValidator.cs
new file mode 100644
index 0000000..91bd6ac
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/CreateProductCommandValidator.cs
@@ -0,0 +1,29 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 创建商品命令验证器。
+/// </summary>
+public sealed class CreateProductCommandValidator : AbstractValidator<CreateProductCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreateProductCommandValidator()
+    {
+        RuleFor(x => x.StoreId).GreaterThan(0);
+        RuleFor(x => x.CategoryId).GreaterThan(0);
+        RuleFor(x => x.SpuCode).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.Subtitle).MaximumLength(256);
+        RuleFor(x => x.Unit).MaximumLength(16);
+        RuleFor(x => x.Price).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.OriginalPrice).GreaterThanOrEqualTo(0).When(x => x.OriginalPrice.HasValue);
+        RuleFor(x => x.StockQuantity).GreaterThanOrEqualTo(0).When(x => x.StockQuantity.HasValue);
+        RuleFor(x => x.MaxQuantityPerOrder).GreaterThan(0).When(x => x.MaxQuantityPerOrder.HasValue);
+        RuleFor(x => x.CoverImage).MaximumLength(256);
+        RuleFor(x => x.GalleryImages).MaximumLength(1024);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/SearchProductsQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/SearchProductsQueryValidator.cs
new file mode 100644
index 0000000..23e3962
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/SearchProductsQueryValidator.cs
@@ -0,0 +1,20 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Queries;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 商品列表查询验证器。
+/// </summary>
+public sealed class SearchProductsQueryValidator : AbstractValidator<SearchProductsQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchProductsQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/UpdateProductCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/UpdateProductCommandValidator.cs
new file mode 100644
index 0000000..20200f2
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/UpdateProductCommandValidator.cs
@@ -0,0 +1,30 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 更新商品命令验证器。
+/// </summary>
+public sealed class UpdateProductCommandValidator : AbstractValidator<UpdateProductCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateProductCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleFor(x => x.StoreId).GreaterThan(0);
+        RuleFor(x => x.CategoryId).GreaterThan(0);
+        RuleFor(x => x.SpuCode).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.Subtitle).MaximumLength(256);
+        RuleFor(x => x.Unit).MaximumLength(16);
+        RuleFor(x => x.Price).GreaterThanOrEqualTo(0);
+        RuleFor(x => x.OriginalPrice).GreaterThanOrEqualTo(0).When(x => x.OriginalPrice.HasValue);
+        RuleFor(x => x.StockQuantity).GreaterThanOrEqualTo(0).When(x => x.StockQuantity.HasValue);
+        RuleFor(x => x.MaxQuantityPerOrder).GreaterThan(0).When(x => x.MaxQuantityPerOrder.HasValue);
+        RuleFor(x => x.CoverImage).MaximumLength(256);
+        RuleFor(x => x.GalleryImages).MaximumLength(1024);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Dto/StoreDto.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Dto/StoreDto.cs
index e924b43..5412717 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Dto/StoreDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Dto/StoreDto.cs
@@ -111,4 +111,9 @@ public sealed class StoreDto
     /// 支持配送。
     /// </summary>
     public bool SupportsDelivery { get; init; }
+
+    /// <summary>
+    /// 创建时间。
+    /// </summary>
+    public DateTime CreatedAt { get; init; }
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/CreateStoreCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/CreateStoreCommandHandler.cs
index 56f9d9c..f254d6f 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/CreateStoreCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/CreateStoreCommandHandler.cs
@@ -72,6 +72,7 @@ public sealed class CreateStoreCommandHandler(IStoreRepository storeRepository,
         DeliveryRadiusKm = store.DeliveryRadiusKm,
         SupportsDineIn = store.SupportsDineIn,
         SupportsPickup = store.SupportsPickup,
-        SupportsDelivery = store.SupportsDelivery
+        SupportsDelivery = store.SupportsDelivery,
+        CreatedAt = store.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreByIdQueryHandler.cs
index 4cb8cb0..995ddde 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreByIdQueryHandler.cs
@@ -47,6 +47,7 @@ public sealed class GetStoreByIdQueryHandler(
         DeliveryRadiusKm = store.DeliveryRadiusKm,
         SupportsDineIn = store.SupportsDineIn,
         SupportsPickup = store.SupportsPickup,
-        SupportsDelivery = store.SupportsDelivery
+        SupportsDelivery = store.SupportsDelivery,
+        CreatedAt = store.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/SearchStoresQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/SearchStoresQueryHandler.cs
index 4efe538..0141ae4 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/SearchStoresQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/SearchStoresQueryHandler.cs
@@ -28,9 +28,27 @@ public sealed class SearchStoresQueryHandler(
             stores = stores.Where(x => x.MerchantId == request.MerchantId.Value).ToList();
         }
 
-        return stores
-            .Select(MapToDto)
+        var sorted = ApplySorting(stores, request.SortBy, request.SortDescending);
+        var paged = sorted
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
             .ToList();
+
+        return paged.Select(MapToDto).ToList();
+    }
+
+    private static IOrderedEnumerable<Domain.Stores.Entities.Store> ApplySorting(
+        IReadOnlyCollection<Domain.Stores.Entities.Store> stores,
+        string? sortBy,
+        bool sortDescending)
+    {
+        return sortBy?.ToLowerInvariant() switch
+        {
+            "name" => sortDescending ? stores.OrderByDescending(x => x.Name) : stores.OrderBy(x => x.Name),
+            "code" => sortDescending ? stores.OrderByDescending(x => x.Code) : stores.OrderBy(x => x.Code),
+            "status" => sortDescending ? stores.OrderByDescending(x => x.Status) : stores.OrderBy(x => x.Status),
+            _ => sortDescending ? stores.OrderByDescending(x => x.CreatedAt) : stores.OrderBy(x => x.CreatedAt)
+        };
     }
 
     private static StoreDto MapToDto(Domain.Stores.Entities.Store store) => new()
@@ -54,6 +72,7 @@ public sealed class SearchStoresQueryHandler(
         DeliveryRadiusKm = store.DeliveryRadiusKm,
         SupportsDineIn = store.SupportsDineIn,
         SupportsPickup = store.SupportsPickup,
-        SupportsDelivery = store.SupportsDelivery
+        SupportsDelivery = store.SupportsDelivery,
+        CreatedAt = store.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreCommandHandler.cs
index 1680932..934bb54 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreCommandHandler.cs
@@ -82,6 +82,7 @@ public sealed class UpdateStoreCommandHandler(
         DeliveryRadiusKm = store.DeliveryRadiusKm,
         SupportsDineIn = store.SupportsDineIn,
         SupportsPickup = store.SupportsPickup,
-        SupportsDelivery = store.SupportsDelivery
+        SupportsDelivery = store.SupportsDelivery,
+        CreatedAt = store.CreatedAt
     };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Queries/SearchStoresQuery.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Queries/SearchStoresQuery.cs
index 085a557..8a0b75b 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Queries/SearchStoresQuery.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Queries/SearchStoresQuery.cs
@@ -18,4 +18,24 @@ public sealed class SearchStoresQuery : IRequest<IReadOnlyList<StoreDto>>
     /// 状态过滤。
     /// </summary>
     public StoreStatus? Status { get; init; }
+
+    /// <summary>
+    /// 页码。
+    /// </summary>
+    public int Page { get; init; } = 1;
+
+    /// <summary>
+    /// 每页条数。
+    /// </summary>
+    public int PageSize { get; init; } = 20;
+
+    /// <summary>
+    /// 排序字段（name/code/status/createdAt）。
+    /// </summary>
+    public string? SortBy { get; init; }
+
+    /// <summary>
+    /// 是否倒序。
+    /// </summary>
+    public bool SortDescending { get; init; } = true;
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Validators/CreateStoreCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/CreateStoreCommandValidator.cs
new file mode 100644
index 0000000..a947ae2
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/CreateStoreCommandValidator.cs
@@ -0,0 +1,29 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Stores.Commands;
+
+namespace TakeoutSaaS.Application.App.Stores.Validators;
+
+/// <summary>
+/// 创建门店命令验证器。
+/// </summary>
+public sealed class CreateStoreCommandValidator : AbstractValidator<CreateStoreCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public CreateStoreCommandValidator()
+    {
+        RuleFor(x => x.MerchantId).GreaterThan(0);
+        RuleFor(x => x.Code).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.Phone).MaximumLength(32);
+        RuleFor(x => x.ManagerName).MaximumLength(64);
+        RuleFor(x => x.Province).MaximumLength(64);
+        RuleFor(x => x.City).MaximumLength(64);
+        RuleFor(x => x.District).MaximumLength(64);
+        RuleFor(x => x.Address).MaximumLength(256);
+        RuleFor(x => x.Announcement).MaximumLength(512);
+        RuleFor(x => x.Tags).MaximumLength(256);
+        RuleFor(x => x.DeliveryRadiusKm).GreaterThanOrEqualTo(0);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Validators/SearchStoresQueryValidator.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/SearchStoresQueryValidator.cs
new file mode 100644
index 0000000..67ea047
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/SearchStoresQueryValidator.cs
@@ -0,0 +1,20 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Stores.Queries;
+
+namespace TakeoutSaaS.Application.App.Stores.Validators;
+
+/// <summary>
+/// 门店列表查询验证器。
+/// </summary>
+public sealed class SearchStoresQueryValidator : AbstractValidator<SearchStoresQuery>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public SearchStoresQueryValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x.SortBy).MaximumLength(64);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Validators/UpdateStoreCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/UpdateStoreCommandValidator.cs
new file mode 100644
index 0000000..d021aae
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Validators/UpdateStoreCommandValidator.cs
@@ -0,0 +1,30 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Stores.Commands;
+
+namespace TakeoutSaaS.Application.App.Stores.Validators;
+
+/// <summary>
+/// 更新门店命令验证器。
+/// </summary>
+public sealed class UpdateStoreCommandValidator : AbstractValidator<UpdateStoreCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateStoreCommandValidator()
+    {
+        RuleFor(x => x.StoreId).GreaterThan(0);
+        RuleFor(x => x.MerchantId).GreaterThan(0);
+        RuleFor(x => x.Code).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.Phone).MaximumLength(32);
+        RuleFor(x => x.ManagerName).MaximumLength(64);
+        RuleFor(x => x.Province).MaximumLength(64);
+        RuleFor(x => x.City).MaximumLength(64);
+        RuleFor(x => x.District).MaximumLength(64);
+        RuleFor(x => x.Address).MaximumLength(256);
+        RuleFor(x => x.Announcement).MaximumLength(512);
+        RuleFor(x => x.Tags).MaximumLength(256);
+        RuleFor(x => x.DeliveryRadiusKm).GreaterThanOrEqualTo(0);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/TakeoutSaaS.Application.csproj b/src/Application/TakeoutSaaS.Application/TakeoutSaaS.Application.csproj
index e320f29..7e49e3f 100644
--- a/src/Application/TakeoutSaaS.Application/TakeoutSaaS.Application.csproj
+++ b/src/Application/TakeoutSaaS.Application/TakeoutSaaS.Application.csproj
@@ -9,6 +9,7 @@
     <PackageReference Include="Microsoft.Extensions.Identity.Core" Version="8.0.1" />
     <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="8.0.0" />
     <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="11.1.0" />
+    <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.9.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Modules\TakeoutSaaS.Module.Sms\TakeoutSaaS.Module.Sms.csproj" />