diff --git a/plugins/FlashSales/src/EasyAbp.EShop.Orders.Plugins.FlashSales.Application/EasyAbp/EShop/Orders/Orders/CreateFlashSaleOrderEventHandler.cs b/plugins/FlashSales/src/EasyAbp.EShop.Orders.Plugins.FlashSales.Application/EasyAbp/EShop/Orders/Orders/CreateFlashSaleOrderEventHandler.cs
index 7866406c..c8ddd87e 100644
--- a/plugins/FlashSales/src/EasyAbp.EShop.Orders.Plugins.FlashSales.Application/EasyAbp/EShop/Orders/Orders/CreateFlashSaleOrderEventHandler.cs
+++ b/plugins/FlashSales/src/EasyAbp.EShop.Orders.Plugins.FlashSales.Application/EasyAbp/EShop/Orders/Orders/CreateFlashSaleOrderEventHandler.cs
@@ -52,7 +52,7 @@ public class CreateFlashSaleOrderEventHandler : IDistributedEventHandler<CreateF
                 {
                     ProductId = eventData.Plan.ProductId,
                     ProductSkuId = eventData.Plan.ProductSkuId,
-                    Quantity = eventData.Quantity
+                    Quantity = 1
                 }
             }
         };
diff --git a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Application/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSalePlanAppService.cs b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Application/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSalePlanAppService.cs
index 4dad2b85..8d92fa8e 100644
--- a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Application/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSalePlanAppService.cs
+++ b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Application/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSalePlanAppService.cs
@@ -252,7 +252,6 @@ public class FlashSalePlanAppService :
             StoreId = plan.StoreId,
             CreateTime = now,
             CustomerRemark = input.CustomerRemark,
-            Quantity = 1,//should configure
             Plan = planEto,
             HashToken = hashToken
         };
diff --git a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/CreateFlashSaleOrderEto.cs b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/CreateFlashSaleOrderEto.cs
index df9dc25a..af228c85 100644
--- a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/CreateFlashSaleOrderEto.cs
+++ b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/CreateFlashSaleOrderEto.cs
@@ -21,8 +21,6 @@ public class CreateFlashSaleOrderEto : ExtensibleObject, IMultiTenant
 
     public string CustomerRemark { get; set; }
 
-    public int Quantity { get; set; }
-
     public FlashSaleProductEto Product { get; set; }
 
     public FlashSaleProductDetailEto ProductDetail { get; set; }
diff --git a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSaleReduceInventoryEto.cs b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSaleReduceInventoryEto.cs
index a77bfb77..99beb450 100644
--- a/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSaleReduceInventoryEto.cs
+++ b/plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Domain.Shared/EasyAbp/EShop/Plugins/FlashSales/FlashSalePlans/FlashSaleReduceInventoryEto.cs
@@ -21,8 +21,6 @@ public class FlashSaleReduceInventoryEto : ExtensibleObject, IMultiTenant
 
     public string CustomerRemark { get; set; }
 
-    public int Quantity { get; set; }
-
     public FlashSalePlanEto Plan { get; set; }
     
     public string HashToken { get; set; }
diff --git a/plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/FlashSaleReduceInventoryEventHandler.cs b/plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/FlashSaleReduceInventoryEventHandler.cs
index 0399ce1d..f4b1092a 100644
--- a/plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/FlashSaleReduceInventoryEventHandler.cs
+++ b/plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/FlashSaleReduceInventoryEventHandler.cs
@@ -65,7 +65,7 @@ public class FlashSaleReduceInventoryEventHandler : IDistributedEventHandler<Fla
             return;
         }
 
-        if (!await ProductManager.TryReduceInventoryAsync(product, productSku, eventData.Quantity, true))
+        if (!await ProductManager.TryReduceInventoryAsync(product, productSku, 1, true))
         {
             await DistributedEventBus.PublishAsync(new CreateFlashSaleOrderCompleteEto()
             {
@@ -98,7 +98,6 @@ public class FlashSaleReduceInventoryEventHandler : IDistributedEventHandler<Fla
             StoreId = eventData.StoreId,
             CreateTime = eventData.CreateTime,
             CustomerRemark = eventData.CustomerRemark,
-            Quantity = eventData.Quantity,
             Product = productEto,
             ProductDetail = productDetailEto,
             Plan = eventData.Plan