diff --git a/Src/Asp.Net/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
index b41a0f2da..d997196b1 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
@@ -115,6 +115,7 @@ namespace SqlSugar
 
         public IDeleteable<T> Where(T deleteObj)
         {
+            Check.Exception(GetPrimaryKeys().IsNullOrEmpty(), "Where(entity) Primary key required");
             Where(new List<T>() { deleteObj });
             return this;
         }