diff --git a/Src/Asp.Net/SqlServerTest/Demo/DemoG_SimpleClient.cs b/Src/Asp.Net/SqlServerTest/Demo/DemoG_SimpleClient.cs
index ad454efc5..dc278f68b 100644
--- a/Src/Asp.Net/SqlServerTest/Demo/DemoG_SimpleClient.cs
+++ b/Src/Asp.Net/SqlServerTest/Demo/DemoG_SimpleClient.cs
@@ -22,8 +22,10 @@ namespace OrmTest
         }
         public class OrderDal:Repository<Order>
         {
-            public void MyTest() { 
-            
+            public void MyTest() 
+            {
+                base.CommQuery("1=1");
+                base.ChangeRepository<Repository<OrderItem>>().CommQuery("1=1");
             }
         }
         public class Repository<T> : SimpleClient<T> where T : class, new()
@@ -32,13 +34,18 @@ namespace OrmTest
             {
                 if (context == null)
                 {
-                    base.Context = new SqlSugarClient(new ConnectionConfig()
+                    var db = new SqlSugarClient(new ConnectionConfig()
                     {
                         DbType = SqlSugar.DbType.SqlServer,
                         InitKeyType = InitKeyType.Attribute,
                         IsAutoCloseConnection = true,
                         ConnectionString = Config.ConnectionString
                     });
+                    base.Context = db;
+                    db.Aop.OnLogExecuting = (s, p) =>
+                    {
+                        Console.WriteLine(s);
+                    };
                 }
             }
 
@@ -46,10 +53,10 @@ namespace OrmTest
             /// 扩展方法，自带方法不能满足的时候可以添加新方法
             /// </summary>
             /// <returns></returns>
-            public List<T> CommQuery(string json)
+            public List<T> CommQuery(string sql)
             {
                 //base.Context.Queryable<T>().ToList();可以拿到SqlSugarClient 做复杂操作
-                return null;
+                return base.Context.Queryable<T>().Where(sql).ToList();
             }
 
         }
diff --git a/Src/Asp.Net/SqlSugar/Interface/ISimpleClient.cs b/Src/Asp.Net/SqlSugar/Interface/ISimpleClient.cs
index 7d1a8f31c..9a3880200 100644
--- a/Src/Asp.Net/SqlSugar/Interface/ISimpleClient.cs
+++ b/Src/Asp.Net/SqlSugar/Interface/ISimpleClient.cs
@@ -8,6 +8,7 @@ namespace SqlSugar
     public interface ISimpleClient<T> where T : class, new()
     {
         SimpleClient<ChangeType> Change<ChangeType>() where ChangeType : class, new();
+        RepositoryType ChangeRepository<RepositoryType>() where RepositoryType : ISugarRepository ;
         IDeleteable<T> AsDeleteable();
         IInsertable<T> AsInsertable(List<T> insertObjs);
         IInsertable<T> AsInsertable(T insertObj);
diff --git a/Src/Asp.Net/SqlSugar/SimpleClient.cs b/Src/Asp.Net/SqlSugar/SimpleClient.cs
index 7a4be1987..358e3b3a3 100644
--- a/Src/Asp.Net/SqlSugar/SimpleClient.cs
+++ b/Src/Asp.Net/SqlSugar/SimpleClient.cs
@@ -2,16 +2,17 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
+using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace SqlSugar
 {
     
-    public partial class SimpleClient<T> : ISimpleClient<T> where T : class, new()
+    public partial class SimpleClient<T> : ISugarRepository,ISimpleClient<T> where T : class, new()
     {
         #region Interface
-        protected ISqlSugarClient Context { get; set; }
+        public ISqlSugarClient Context { get; set; }
 
         public ITenant AsTenant()
         {
@@ -34,6 +35,17 @@ namespace SqlSugar
         {
             return this.Context.GetSimpleClient<ChangeType>();
         }
+        public RepositoryType ChangeRepository<RepositoryType>() where RepositoryType : ISugarRepository
+        {
+            Type type = typeof(RepositoryType);
+            object o = Activator.CreateInstance(type,new string[]{ null});
+            var result= (RepositoryType)o;
+            if (result.Context == null)
+            {
+                result.Context = this.Context;
+            }
+            return result;
+        }
         public ISugarQueryable<T> AsQueryable()
         {
             return Context.Queryable<T>();
@@ -291,4 +303,9 @@ namespace SqlSugar
         [Obsolete("Use AsSugarClient()")]
         public ISqlSugarClient FullClient { get { return this.Context; } }
     }
+
+    public interface ISugarRepository 
+    {
+         ISqlSugarClient Context { get; set; }
+    }
 }