diff --git a/src/WMS.Web.Domain/Entitys/Box.cs b/src/WMS.Web.Domain/Entitys/Box.cs
index 4c17ad6b..587e1efe 100644
--- a/src/WMS.Web.Domain/Entitys/Box.cs
+++ b/src/WMS.Web.Domain/Entitys/Box.cs
@@ -203,8 +203,8 @@ namespace WMS.Web.Domain.Entitys
                 var md = this.Details.FirstOrDefault(w => w.MaterialNumber == d.MaterialNumber);
                 if (md == null)
                     this.Details.Add(new BoxDetails() { MaterialNumber = d.MaterialNumber, Qty = d.Qty });
-                else
-                    md.Qty = d.Qty;
+                //else//alter by yzh 
+                //    md.Qty = d.Qty;
             }
 
             return Result.ReSuccess();