diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
index b6d507d7e..dffc0965a 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
@@ -614,7 +614,7 @@ namespace SqlSugar
             {
                 var value = item.Value;
                 var expressionTree = new ExpressionTreeVisitor().GetExpressions(value);
-                var isSqlMethod = ExpressionTool.GetMethodName(expressionTree.Last()).IsIn("Any", "Count");
+                var isSqlMethod = expressionTree.Any()&&ExpressionTool.GetMethodName(expressionTree.Last()).IsIn("Any", "Count");
                 if (expressionTree.Any()&&isSqlMethod==false)
                 {
                    
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
index 5b81ee52e..500555757 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
@@ -41,6 +41,10 @@ namespace SqlSugar
                 return GetMemberBindingItemList((caseExp as MemberInitExpression).Bindings);
             }
             var exp= caseExp as NewExpression;
+            if (exp == null) 
+            {
+                Check.ExceptionEasy("Use Select(it=>new class(){})", "导航查询请使用Select(it=>new class(){})");
+            }
             var dict = new Dictionary<string, Expression>();
 
             for (int i = 0; i < exp.Arguments.Count; i++)