diff --git a/Src/Asp.Net/MySqlTest/Models/Order.cs b/Src/Asp.Net/MySqlTest/Models/Order.cs
index 8a081de79..fb1cb7cef 100644
--- a/Src/Asp.Net/MySqlTest/Models/Order.cs
+++ b/Src/Asp.Net/MySqlTest/Models/Order.cs
@@ -15,7 +15,7 @@ namespace OrmTest
 
         public string Name { get; set; }
         public decimal Price { get; set; }
-        [SugarColumn(IsNullable = true,DefaultValue ="null")]
+        [SugarColumn(IsNullable = true)]
         public DateTime CreateTime { get; set; }
         [SugarColumn(IsNullable =true)]
         public int CustomId { get; set; }