diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Append.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Append.cs
index 48a7ae810..40b6004a2 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Append.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Append.cs
@@ -1,5 +1,4 @@
-using Newtonsoft.Json.Linq;
-using System;
+using System;
 using System.Collections.Generic; 
 using System.Linq;
 using System.Linq.Expressions;