diff --git a/SqlServerTest/Demos/Filter.cs b/SqlServerTest/Demos/Filter.cs
index 5cb306ac2..d0ffb0794 100644
--- a/SqlServerTest/Demos/Filter.cs
+++ b/SqlServerTest/Demos/Filter.cs
@@ -1,4 +1,5 @@
 using OrmTest.Demo;
+using OrmTest.Models;
 using SqlSugar;
 using System;
 using System.Collections.Generic;
@@ -13,8 +14,39 @@ namespace OrmTest.Demos
         {
             public static void Init()
             {
-                var db = GetInstance();
-            //    db.QueryFilter.Add(eSqlFilterItem(){   });
+
+
+                //gobal filter
+                var db = GetInstance1();
+
+                var sql = db.Queryable<Student>().ToSql();
+
+                var sql2 = db.Queryable<Student, School>((f, s) => new object[] { JoinType.Left, f.SchoolId == s.Id }).ToSql();
+
+                //Specify name filter 
+
+            }
+
+            public static SqlSugarClient GetInstance1()
+            {
+                SqlSugarClient db = new SqlSugarClient(new ConnectionConfig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer, IsAutoCloseConnection = true });
+                db.QueryFilter
+                 .Add(new SqlFilterItem()
+                 {
+                     FilterValue = filterDb =>
+                     {
+                         return new SqlFilterResult() { Sql = " isDelete=0", Parameters = new List<SugarParameter>() { } };
+                     },
+                     IsJoinQuery = false
+                 }).Add(new SqlFilterItem()
+                 {
+                     FilterValue = filterDb =>
+                     {
+                         return new SqlFilterResult() { Sql = " f.isDelete=0", Parameters = new List<SugarParameter>() { } };
+                     },
+                     IsJoinQuery = true
+                 });
+                return db;
             }
         }
     }
diff --git a/SqlSugar/Abstract/FilterProvider/FilterProvider.cs b/SqlSugar/Abstract/FilterProvider/FilterProvider.cs
index 57b00ef6d..fef204282 100644
--- a/SqlSugar/Abstract/FilterProvider/FilterProvider.cs
+++ b/SqlSugar/Abstract/FilterProvider/FilterProvider.cs
@@ -5,15 +5,17 @@ using System.Text;
 
 namespace SqlSugar
 {
-    public class QueryFilterProvider
+    public class QueryFilterProvider : IFilter
     {
-        internal SqlSugarClient Context{ get; set; }
+        internal SqlSugarClient Context { get; set; }
         private List<SqlFilterItem> _Filters { get; set; }
 
-        public void Add(SqlFilterItem filter)
+        public IFilter Add(SqlFilterItem filter)
         {
             if (_Filters == null)
                 _Filters = new List<SqlFilterItem>();
+            _Filters.Add(filter);
+            return this;
         }
 
         public void Remove(string filterName)
diff --git a/SqlSugar/Entities/SqlFilter.cs b/SqlSugar/Entities/SqlFilter.cs
index 20b45541d..f974c3122 100644
--- a/SqlSugar/Entities/SqlFilter.cs
+++ b/SqlSugar/Entities/SqlFilter.cs
@@ -7,8 +7,14 @@ namespace SqlSugar
 {
     public class SqlFilterItem
     {
+        /// <summary>
+        /// Equal to NULL representing global
+        /// </summary>
         public string FilterName { get; set; }
-        public Func<SqlSugarClient,SqlFilterResult> GetFilterSql { get; set; }
+        public Func<SqlSugarClient,SqlFilterResult> FilterValue { get; set; }
+        /// <summary>
+        /// Is it a multiple table query?
+        /// </summary>
         public bool IsJoinQuery { get; set; }
     }
 
diff --git a/SqlSugar/Interface/IFilter.cs b/SqlSugar/Interface/IFilter.cs
new file mode 100644
index 000000000..265a163f5
--- /dev/null
+++ b/SqlSugar/Interface/IFilter.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace SqlSugar
+{
+    public interface IFilter
+    {
+        IFilter Add(SqlFilterItem filter);
+        void Remove(string filterName);
+        List<SqlFilterItem> GeFilterList { get; }
+    }
+}
diff --git a/SqlSugar/SqlSugar.csproj b/SqlSugar/SqlSugar.csproj
index 7ffffe491..d304e4f5f 100644
--- a/SqlSugar/SqlSugar.csproj
+++ b/SqlSugar/SqlSugar.csproj
@@ -72,6 +72,7 @@
     <Compile Include="Interface\ICacheManager.cs" />
     <Compile Include="Entities\SugarMessageResult.cs" />
     <Compile Include="Enum\InitKeyType.cs" />
+    <Compile Include="Interface\IFilter.cs" />
     <Compile Include="Realization\MySql\DbType.cs" />
     <Compile Include="Realization\MySql\DbBind\MySqlDbBind.cs" />
     <Compile Include="Realization\MySql\SqlBuilder\MySqlBuilder.cs" />