diff --git a/src/WMS.Web.Domain/Services/InStockTaskService.cs b/src/WMS.Web.Domain/Services/InStockTaskService.cs
index 159deb0e..b99a0ca5 100644
--- a/src/WMS.Web.Domain/Services/InStockTaskService.cs
+++ b/src/WMS.Web.Domain/Services/InStockTaskService.cs
@@ -556,10 +556,14 @@ namespace WMS.Web.Domain.Services
                 foreach (var erp_data in erp_list)
                 {
                     // if (det.MaterialId != erp_data.MaterialId || (det.MaterialId == erp_data.MaterialId && det.StockCode != erp_data.StockCode))
-                    var IsHaveNewMaterial = data_list.SelectMany(s => s.Details).Where(x => x.ErpDetailId == erp_data.ErpDetailId && erp_data.MaterialId == x.MaterialId).Any();
+                    var IsHaveNewMaterial = data_list.Where(x=>x.SourceBillNo==erp_data.BillNo).SelectMany(s => s.Details).Where(x =>x.ErpDetailId == erp_data.ErpDetailId && erp_data.MaterialId == x.MaterialId).Any();
                     if (!IsHaveNewMaterial)
+                    {
                         //当物料相同，仓库不同或者物料不同，就新增一条明细
                         erp_addDetailsList.Add(erp_data);
+                        //操作完后剔除
+                        erp_removeList.Add(erp_data);
+                    }
                 }
 
                 //2.2遍历任务单：添加新的明细