diff --git a/Src/Asp.Net/MySqlTest/Demos/1_Query.cs b/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
index c5616ae5c..b3ba02b5e 100644
--- a/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
+++ b/Src/Asp.Net/MySqlTest/Demos/1_Query.cs
@@ -174,6 +174,8 @@ namespace OrmTest.Demo
             var list3 = db.Queryable<Student>()
                 .PartitionBy(it => new { it.Id, it.Name }).Take(1).ToList();
 
+            var list31 = db.Queryable<Student>()
+            .PartitionBy(it => new { it.Id, it.Name }).Take(1).Count();
 
             //SQL:
             //SELECT AVG([Id]) AS[idAvg], [Name] AS[name]  FROM[Student] GROUP BY[Name],[Id] HAVING(AVG([Id]) > 0 )
diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlQueryBuilder.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlQueryBuilder.cs
index 0e6da9a0b..a9a81ad57 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlQueryBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlQueryBuilder.cs
@@ -65,7 +65,14 @@ namespace SqlSugar
         }
         public override string ToCountSql(string sql)
         {
-            return Regex.Replace(sql,"^SELECT .+? FROM ", "SELECT COUNT(*) FROM ");
+            if (this.GroupByValue.HasValue())
+            {
+                return base.ToCountSql(sql);
+            }
+            else
+            {
+                return Regex.Replace(sql, "^SELECT .+? FROM ", "SELECT COUNT(*) FROM ");
+            }
         }
         #endregion