diff --git a/src/WMS.Web.Domain/Services/InStockService.cs b/src/WMS.Web.Domain/Services/InStockService.cs
index 164ae6e3..b68821f3 100644
--- a/src/WMS.Web.Domain/Services/InStockService.cs
+++ b/src/WMS.Web.Domain/Services/InStockService.cs
@@ -606,7 +606,7 @@ namespace WMS.Web.Domain.Services
             entity.Details.ForEach(x =>
             {
                 //当前明细收货的明细：可以通过erp明细ID获取唯一一个;并变更收货数量
-                var current_dto_det = dto.Details.Where(x => x.ErpDetailId == x.ErpDetailId).FirstOrDefault();
+                var current_dto_det = dto.Details.Where(t => t.ErpDetailId == x.ErpDetailId && t.MaterialId==x.MaterialId).FirstOrDefault();
                 if (current_dto_det != null && x.ErpDetailId == current_dto_det.ErpDetailId)
                     x.ReceiveQty = x.ReceiveQty + current_dto_det.ReceiveQty;
             });