diff --git a/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs b/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
index fedea21da..55d78a1b5 100644
--- a/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
@@ -4,7 +4,6 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.Common;
-using System.DirectoryServices.ActiveDirectory;
 using System.Dynamic;
 using System.Linq;
 using System.Linq.Expressions;