diff --git a/BBWYB.Server.Business/PurchaseOrder/PurchaseOrderBusiness.cs b/BBWYB.Server.Business/PurchaseOrder/PurchaseOrderBusiness.cs
index 75248b4..6b7f948 100644
--- a/BBWYB.Server.Business/PurchaseOrder/PurchaseOrderBusiness.cs
+++ b/BBWYB.Server.Business/PurchaseOrder/PurchaseOrderBusiness.cs
@@ -255,6 +255,23 @@ namespace BBWYB.Server.Business
             var isRepurchase = fsql.Select<OrderCost>(dbOrder.Id).Any();
             var orderSkus = fsql.Select<OrderSku>().Where(osku => osku.OrderId == request.OrderId).ToList();
             var orderPurchaseInfoList = fsql.Select<OrderPurchaseInfo>().Where(opi => opi.OrderId == request.OrderId && opi.IsEnabled == true).ToList();
+            var orderCostDetailList = fsql.Select<OrderCostDetail>().Where(ocd => ocd.OrderId == request.OrderId && ocd.IsEnabled == true).ToList();
+
+            foreach (var cargoParamGroup in request.CargoParamGroupList)
+            {
+                var purchaseOrder = orderPurchaseInfoList.FirstOrDefault(opi => opi.PurchaserId == cargoParamGroup.PurchaserId);
+                if (purchaseOrder != null)
+                {
+                    foreach (var cargoParam in cargoParamGroup.CargoParamList)
+                    {
+                        if (purchaseOrder.BelongSkuIds.Contains(cargoParam.BelongSkuId))
+                        {
+                            //throw new BusinessException($"订单sku[{cargoParam.BelongSkuId}]已经存在同一个商家[{cargoParamGroup.PurchaserId}][{cargoParamGroup.PurchaserName}]的另一笔采购单中[{purchaseOrder.PurchaseOrderId}],请不要为同一笔订单sku进行同商家采购");
+                            throw new BusinessException($"提示:请勿为同一个订单中的sku重复向同一个商家下采购单\r\n重复信息:\r\n- 订单sku:{cargoParam.BelongSkuId}\r\n- 商家:{cargoParamGroup.PurchaserName}");
+                        }
+                    }
+                }
+            }
 
             var extJArray = JsonConvert.DeserializeObject<JArray>(request.Extensions);
 
@@ -279,8 +296,8 @@ namespace BBWYB.Server.Business
 
             IInsert<OrderCost> insertOrderCost = null;
             IUpdate<OrderCost> updateOrderCost = null;
-            var totalPurchaseProductAmount = 0M;
-            var totalPurchaseFreight = 0M;
+            //var totalPurchaseProductAmount = 0M;
+            //var totalPurchaseFreight = 0M;
 
             foreach (var cargoParamGroup in request.CargoParamGroupList)
             {
@@ -326,8 +343,8 @@ namespace BBWYB.Server.Business
                     OrderId = createOrderResponse.OrderId
                 });
 
-                totalPurchaseProductAmount += purchaseOrderSimpleInfo.ProductAmount;
-                totalPurchaseFreight += purchaseOrderSimpleInfo.FreightAmount;
+                //totalPurchaseProductAmount += purchaseOrderSimpleInfo.ProductAmount;
+                //totalPurchaseFreight += purchaseOrderSimpleInfo.FreightAmount;
 
                 foreach (var cargoParam in cargoParamGroup.CargoParamList)
                 {
@@ -478,9 +495,12 @@ namespace BBWYB.Server.Business
                 CreateTime = DateTime.Now,
                 IsManualEdited = false
             };
+
+            var totalPurchaseProductAmount = orderCostDetailList.Union(insertOrderCostDetails).Sum(ocd => ocd.SkuAmount);
+            var totalPurchaseFreight = orderCostDetailList.Union(insertOrderCostDetails).Sum(ocd => ocd.PurchaseFreight);
             orderCost.CalculationOrderCostCostAndProfit(dbOrder.OrderTotalPrice.Value,
-                                                        totalPurchaseProductAmount,
-                                                        totalPurchaseFreight,
+                                                        totalPurchaseProductAmount ?? 0M,
+                                                        totalPurchaseFreight ?? 0M,
                                                         0M,
                                                         0M);