diff --git a/src/WMS.Web.Repositories/OutStockTaskRepositories.cs b/src/WMS.Web.Repositories/OutStockTaskRepositories.cs
index 7f5a005c..e500f3ca 100644
--- a/src/WMS.Web.Repositories/OutStockTaskRepositories.cs
+++ b/src/WMS.Web.Repositories/OutStockTaskRepositories.cs
@@ -290,7 +290,7 @@ namespace WMS.Web.Repositories
                 OutStockBeginTime = s.detail.OutStockBeginTime.DateToStringSeconds(),
                 OutStockEndTime = s.detail.OutStockEndTime.DateToStringSeconds(),
                 Stock = _singleDataService.GetSingleData(SingleAction.Stocks, _loginRepositories.CompanyId, s.detail.StockCode),
-                SourceBillNo = string.Join(",", s.detail.SourceBillNos.Select(x => x)),
+                SourceBillNo = string.Join(",", s.detail.SourceBillNos),
                 SaleBillNo = s.detail.SaleBillNo,
                 DeliveryOrg = _erpBasicDataExtendService.GetOrgName(orgs, s.order.DeliveryOrgId),
                 ReceiptCustomer = s.order.Type == OutStockType.Sal