diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs b/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
index 6d6fb88d..6775a079 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
@@ -8,7 +8,7 @@ namespace Yi.Framework.Model.Base
 {
     public class Entity<Key> : IEntity<Key>
     {
-        public Key Id { get; set; }
+        public Key Id { get; set; }=default(Key)!;
 
         public object[] GetKeys()
         {