diff --git a/src/WMS.Web.Repositories/InStockTaskRepositories.cs b/src/WMS.Web.Repositories/InStockTaskRepositories.cs
index ea726d5d..3649ecfd 100644
--- a/src/WMS.Web.Repositories/InStockTaskRepositories.cs
+++ b/src/WMS.Web.Repositories/InStockTaskRepositories.cs
@@ -191,7 +191,7 @@ namespace WMS.Web.Repositories
                             Receiver = x.box.ReceiverId.HasValue ? _singleDataService.GetSingleData(SingleAction.Staffs, companyId, x.box.ReceiverId.Value) : "",
                             Qty = x.detail.ReceiveQty,
                             ReceiveQty = x.detail.ReceiveQty,
-                            SerialNumbers= (string.Join(",", x.detail.SerialNumbers).TrimEnd(','))
+                            SerialNumbers=x.detail.SerialNumbers.Count>0? (string.Join(",", x.detail.SerialNumbers).TrimEnd(',')):"",
                         }).ToListAsync();
 
                     if (boxList != null && boxList.Count != 0)