diff --git a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
index ec5e30bf9..5c439302e 100644
--- a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
+++ b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
@@ -195,6 +195,7 @@
     <Compile Include="UnitTest\UOneManyMany3.cs" />
     <Compile Include="UnitTest\UOneManyMany2.cs" />
     <Compile Include="UnitTest\UOneManyMany.cs" />
+    <Compile Include="UnitTest\UOneManyMany7.cs" />
     <Compile Include="UnitTest\USelectSinleDTO.cs" />
     <Compile Include="UnitTest\USelectTest.cs" />
     <Compile Include="UnitTest\USplit.cs" />
diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs b/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
index 89557758c..feb82658a 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UOneManyMany7.init();
             UinitCustomConvert.Init();
             UnitFilterasdfas.Init();
             Unitadfa1231.Init();
diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany7.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany7.cs
new file mode 100644
index 000000000..b35ae8c1e
--- /dev/null
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany7.cs
@@ -0,0 +1,196 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace OrmTest
+{
+    public class UOneManyMany7
+    {
+
+        public static void init()
+        {
+
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<Student_004, School_004, Room_004, Desk_004, Book_004>();
+            db.DbMaintenance.TruncateTable<Student_004, School_004, Room_004, Desk_004, Book_004>();
+
+            var id1 = Guid.NewGuid();
+            var id2 = Guid.NewGuid();
+            var id3 = Guid.NewGuid();
+            var id4 = Guid.NewGuid();
+            db.Insertable(new Student_004() { sid = Guid.NewGuid(), StudentId = id1, Name = "北大jack", SchoolId = id1 }).ExecuteCommand();
+            db.Insertable(new Student_004() { sid = Guid.NewGuid(), StudentId = id2, Name = "青华jack", SchoolId = id2 }).ExecuteCommand();
+
+            var scid = Guid.NewGuid();
+            var scid2 = Guid.NewGuid();
+            db.Insertable(new School_004() { scid =scid, scid2 = id1, schname = "北大" }).ExecuteCommand();
+            db.Insertable(new School_004() { scid = scid2, scid2 = id2, schname = "青华" }).ExecuteCommand();
+            db.Insertable(new Book_004() { StudentId = id1, Name = "数学001" }).ExecuteCommand();
+            db.Insertable(new Book_004() { StudentId = id2, Name = "语文002" }).ExecuteCommand();
+
+
+            db.Insertable(new Room_004() { roomId = id1, schoolId = scid2, roomName = "北大01室" }).ExecuteCommand();
+            db.Insertable(new Room_004() { roomId = id2, schoolId = scid2, roomName = "北大02室" }).ExecuteCommand();
+            db.Insertable(new Room_004() { roomId = id3, schoolId = scid, roomName = "青华03室" }).ExecuteCommand();
+            db.Insertable(new Room_004() { roomId = id4, schoolId = scid, roomName = "青华04室" }).ExecuteCommand();
+
+            db.Insertable(new Desk_004() { roomId = id1, deskid = id1, deskName = "北大01室_01" }).ExecuteCommand();
+            db.Insertable(new Desk_004() { roomId = id2, deskid = id2, deskName = "北大02室_01" }).ExecuteCommand();
+            db.Insertable(new Desk_004() { roomId = id3, deskid = id3, deskName = "青华03室_01" }).ExecuteCommand();
+            db.Insertable(new Desk_004() { roomId = id4, deskid = id4, deskName = "青华04室_01" }).ExecuteCommand();
+
+
+            var list = db.Queryable<Student_004>()
+                         .Includes(x => x.school_001, x => x.rooms)
+                         .Includes(x => x.books)
+                .ToList();
+
+
+            var list2 = db.Queryable<Student_004>()
+                         .Includes(x => x.school_001, x => x.rooms)
+                         .Includes(x => x.books)
+                         .Select(x => new Student_004DTO
+                         {
+                             SchoolId = x.SchoolId,
+                             books = x.books,
+                             school_001 = x.school_001
+                         }, true)
+                .ToList();
+
+            if (!list2.First().school_001.rooms.Any()) { throw new Exception("unit error"); }
+
+            var list3 = db.Queryable<Student_004>()
+             .Includes(x => x.school_001, x => x.rooms)
+               .Includes(x => x.books)
+                .Select(x => new
+                {
+                    SchoolId = x.SchoolId,
+                    x2 = x.books ,
+                    x = x.school_001,
+                    school_001 = x.school_001
+                })
+            .ToList();
+
+            if (!list3.First().school_001.rooms.Any()) { throw new Exception("unit error"); }
+
+            var list4 = db.Queryable<Student_004>()
+              .Includes(x => x.school_001, x => x.rooms)
+              .Includes(x => x.books) 
+              .LeftJoin<Student_004>((x,y)=>x.StudentId==y.StudentId)
+              .Select((x) => new
+              {
+                  SchoolId = x.SchoolId,
+                  x2 = x.books,
+                  x = x.school_001,
+                  school_001 = x.school_001
+              })
+              .ToList();
+
+            if (!list4.First().school_001.rooms.Any()) { throw new Exception("unit error"); }
+
+            var list5= db.Queryable<Student_004>()
+           .Includes(x => x.school_001, x => x.rooms)
+           .Includes(x => x.books)
+           .LeftJoin<Order>((x, y) => true)
+           .Select((x,y) => new Student_004DTO
+           {
+               SchoolId = x.SchoolId,
+               books = x.books,
+               school_001 = x.school_001,
+               Name=y.Name
+           })
+           .ToList();
+
+
+
+            var list6 = db.Queryable<Student_004>()
+           .Includes(x => x.school_001, x => x.rooms)
+           .Includes(x => x.books)
+           .LeftJoin<Order>((x, y) => true)
+           .Select((x, y) => new 
+           {
+               SchoolId = x.SchoolId,
+               books = x.books.Select(it=>new Order() {  Name=it.Name } ).ToList(),
+               bookFirst = x.books.Select(it => new Order() { Name = it.Name }  ).FirstOrDefault(),
+               school_001 = x.school_001,
+               Name = y.Name
+           })
+           .ToList();
+
+        }
+
+
+        public class Student_004DTO
+        {
+
+            public Guid sid { get; set; }
+            public Guid StudentId { get; set; }
+            public string Name { get; set; }
+
+            public Guid SchoolId { get; set; }
+
+            public School_004 school_001 { get; set; }
+
+            public List<Book_004> books { get; set; }
+
+        }
+
+        [SugarTable("Student_005")]
+        public class Student_004
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+            public Guid sid { get; set; }
+            public Guid StudentId { get; set; }
+            public string Name { get; set; }
+
+            public Guid SchoolId { get; set; }
+            [SqlSugar.Navigate(SqlSugar.NavigateType.OneToOne, nameof(SchoolId), nameof(School_004.scid2))]
+            public School_004 school_001 { get; set; }
+            [SqlSugar.Navigate(SqlSugar.NavigateType.OneToMany, nameof(Book_004.StudentId), nameof(StudentId))]
+            public List<Book_004> books { get; set; }
+
+        }
+
+        [SugarTable("Book_005")]
+        public class Book_004
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+            public Guid bookid { get; set; }
+            public string Name { get; set; }
+            public Guid StudentId { get; set; }
+        }
+
+        [SugarTable("School_005")]
+        public class School_004
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+            public Guid scid { get; set; }
+            public Guid scid2 { get; set; }
+            public string schname { get; set; }
+            [SqlSugar.Navigate(SqlSugar.NavigateType.OneToMany, nameof(Room_004.schoolId))]
+            public List<Room_004> rooms { get; set; }
+        }
+
+        [SugarTable("Room_005")]
+        public class Room_004
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+            public Guid roomId { get; set; }
+            public Guid schoolId { get; set; }
+            public string roomName { get; set; }
+            [SqlSugar.Navigate(SqlSugar.NavigateType.OneToMany, nameof(Desk_004.roomId))]
+            public List<Desk_004> desk { get; set; }
+        }
+        [SugarTable("Desk_005")]
+        public class Desk_004
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+            public Guid deskid { get; set; }
+            public string deskName { get; set; }
+            public Guid roomId { get; set; }
+        }
+    }
+}