diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
index a612d99de..c66479057 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
@@ -250,7 +250,7 @@ namespace SqlSugar
         }
         private void InSubGroupBy(BinaryExpression expression,string not)
         {
-            var leftSql = GetNewExpressionValue(expression.Left);
+            var leftSql = GetNewExpressionValue(ExpressionTool.RemoveConvert(expression.Left));
             var rightExpression = expression.Right as MethodCallExpression;
             if (rightExpression.Arguments[0] is LambdaExpression) 
             {