diff --git a/src/WMS.Web.Domain/Entitys/OutStockTask.cs b/src/WMS.Web.Domain/Entitys/OutStockTask.cs
index 970e7701..47ce683f 100644
--- a/src/WMS.Web.Domain/Entitys/OutStockTask.cs
+++ b/src/WMS.Web.Domain/Entitys/OutStockTask.cs
@@ -159,7 +159,7 @@ namespace WMS.Web.Domain.Entitys
                 if (idStr.Length >= 8) break;
             }
             //this.Number = CNSpellTranslator.GetFirstSpell(this.Name) + idStr;
-            this.BillNo = "CKZL" + idStr;
+            this.BillNo = "CKRW" + idStr;
         }
 
         /// <summary>