diff --git a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreFeeCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreFeeCommandHandler.cs
index 12ec41a..caf62ee 100644
--- a/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreFeeCommandHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Stores/Handlers/UpdateStoreFeeCommandHandler.cs
@@ -54,19 +54,10 @@ public sealed class UpdateStoreFeeCommandHandler(
         fee.OrderPackagingFeeMode = request.PackagingFeeMode == PackagingFeeMode.Fixed
             ? request.OrderPackagingFeeMode
             : OrderPackagingFeeMode.Fixed;
-        if (request.PackagingFeeMode == PackagingFeeMode.Fixed && request.OrderPackagingFeeMode == OrderPackagingFeeMode.Tiered)
-        {
-            var normalizedTiers = StoreFeeTierHelper.Normalize(request.PackagingFeeTiers);
-            fee.FixedPackagingFee = 0m;
-            fee.PackagingFeeTiersJson = StoreFeeTierHelper.Serialize(normalizedTiers);
-        }
-        else
-        {
-            fee.FixedPackagingFee = request.PackagingFeeMode == PackagingFeeMode.Fixed
-                ? request.FixedPackagingFee ?? 0m
-                : 0m;
-            fee.PackagingFeeTiersJson = null;
-        }
+        fee.FixedPackagingFee = request.FixedPackagingFee ?? 0m;
+        // 非生效模式下也保留配置，避免模式切换后历史阶梯被清空。
+        var normalizedTiers = StoreFeeTierHelper.Normalize(request.PackagingFeeTiers);
+        fee.PackagingFeeTiersJson = StoreFeeTierHelper.Serialize(normalizedTiers);
         fee.FreeDeliveryThreshold = request.FreeDeliveryThreshold;
 
         // 4. (空行后) 保存并返回