diff --git a/src/WMS.Web.Domain/Services/InStockTaskService.cs b/src/WMS.Web.Domain/Services/InStockTaskService.cs
index b99a0ca5..dfa6c1f7 100644
--- a/src/WMS.Web.Domain/Services/InStockTaskService.cs
+++ b/src/WMS.Web.Domain/Services/InStockTaskService.cs
@@ -557,20 +557,30 @@ namespace WMS.Web.Domain.Services
                 {
                     // if (det.MaterialId != erp_data.MaterialId || (det.MaterialId == erp_data.MaterialId && det.StockCode != erp_data.StockCode))
                     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();
+                    var IsHaveNewErpDetId = data_list.Where(x => x.SourceBillNo == erp_data.BillNo).SelectMany(s => s.Details).Where(x => x.ErpDetailId != erp_data.ErpDetailId).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);                        
+                    }
+                    if (IsHaveNewErpDetId)
+                    {
+                        //当物料相同，明细不同新增一条明细
                         erp_addDetailsList.Add(erp_data);
                         //操作完后剔除
                         erp_removeList.Add(erp_data);
                     }
+                    
                 }
 
+                //去重
+                var erp_addDetailsList_group= erp_addDetailsList.Distinct().ToList();
+
                 //2.2遍历任务单：添加新的明细
                 data_list.ForEach(order =>
                 {
                     //2.1.任务单添加明细
-                    var addErpDetails = erp_addDetailsList.Where(x => x.BillNo == order.SourceBillNo).ToList();
+                    var addErpDetails = erp_addDetailsList_group.Where(x => x.BillNo == order.SourceBillNo).ToList();
                     if (addErpDetails.Count != 0)
                     {
                         var addDetails = _mapper.Map<List<InStockTaskDetails>>(addErpDetails);