diff --git a/README.md b/README.md
index f5f7b4c55..802e581f9 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
   var getByFuns = db.Queryable<Student>().Where(it => NBORM.IsNullOrEmpty(it.Name)).ToList();
 ``` 
 
-###1.3 Page
+### 1.3 Page
 ```c
 var pageIndex = 1;
 var pageSize = 2;
@@ -36,3 +36,30 @@ var top5 = db.Queryable<Student>().Take(5).ToList();
 //skip5
 var skip5 = db.Queryable<Student>().Skip(5).ToList();
 ``` 
+
+### 1.4 Join
+```c
+//join  2
+var list = db.Queryable<Student, School>((st, sc) => new object[] {
+JoinType.Left,st.SchoolId==sc.Id
+}).ToList();
+
+//join  3
+var list2 = db.Queryable<Student, School,Student>((st, sc,st2) => new object[] {
+JoinType.Left,st.SchoolId==sc.Id,
+JoinType.Left,st.SchoolId==st2.Id
+}).ToList();
+
+//join return List<ViewModelStudent>
+var list3 = db.Queryable<Student, School>((st, sc) => new object[] {
+JoinType.Left,st.SchoolId==sc.Id
+}).Select<Student,School,ViewModelStudent>((st,sc)=>new ViewModelStudent { Name= st.Name,SchoolId=sc.Id }).ToList();
+
+//join Order By (order by st.id desc,sc.id desc)
+var list4 = db.Queryable<Student, School>((st, sc) => new object[] {
+JoinType.Left,st.SchoolId==sc.Id
+})
+.OrderBy(st=>st.Id,OrderByType.Desc)
+.OrderBy<School>(sc=>sc.Id,OrderByType.Desc)
+.Select<Student, School, ViewModelStudent>((st, sc) => new ViewModelStudent { Name = st.Name, SchoolId = sc.Id }).ToList();
+```