diff --git a/src/WMS.Web.Domain/Entitys/InStockTaskBox.cs b/src/WMS.Web.Domain/Entitys/InStockTaskBox.cs
index 50624b36..cb2f4ba2 100644
--- a/src/WMS.Web.Domain/Entitys/InStockTaskBox.cs
+++ b/src/WMS.Web.Domain/Entitys/InStockTaskBox.cs
@@ -27,7 +27,7 @@ namespace WMS.Web.Domain.Entitys
         /// <summary>
         /// 单据ID(等同-入库任务单明细ID)
         /// </summary>
-        public int TaskDetailId { get; set; }
+        public int? TaskDetailId { get; set; }
 
         /// <summary>
         /// 箱号ID