diff --git a/KJD_WebService/BLL/BXX/BXXProductManage.cs b/KJD_WebService/BLL/BXX/BXXProductManage.cs
index 6b486cb..c669ed3 100644
--- a/KJD_WebService/BLL/BXX/BXXProductManage.cs
+++ b/KJD_WebService/BLL/BXX/BXXProductManage.cs
@@ -2853,7 +2853,7 @@ namespace KJD_Web.BLL.BXX
 
 				if (tableName != "bxx.product" || is_normal_user)
 					sql = "delete from " + tableName + " where id='" + id + "'";
-				else if (is_real_del.ToLower() == "true")
+				else if (is_real_del?.ToLower() == "true")
 					sql = "delete from " + tableName + " where id='" + id + "' and is_del=1";
 				else
 					sql = "update " + tableName + " set is_del=1 where id='" + id + "'";