diff --git a/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite b/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite
index 80f2adcdd..7cb75676e 100644
Binary files a/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite and b/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite differ
diff --git a/Src/Asp.Net/SqliteTest/SqliteTest.csproj b/Src/Asp.Net/SqliteTest/SqliteTest.csproj
index 7724f0ef5..2dea3fe8f 100644
--- a/Src/Asp.Net/SqliteTest/SqliteTest.csproj
+++ b/Src/Asp.Net/SqliteTest/SqliteTest.csproj
@@ -77,6 +77,11 @@
     <Compile Include="Models\TestTree.cs" />
     <Compile Include="Models\Tree.cs" />
     <Compile Include="Models\ViewOrder.cs" />
+    <Compile Include="UnitTest\Models\Book.cs" />
+    <Compile Include="UnitTest\Models\Playground.cs" />
+    <Compile Include="UnitTest\Models\Room.cs" />
+    <Compile Include="UnitTest\Models\School.cs" />
+    <Compile Include="UnitTest\Models\Student.cs" />
     <Compile Include="UnitTest\UnitFilterdafa.cs" />
     <Compile Include="UnitTest\Models\BilPayment.cs" />
     <Compile Include="UnitTest\UInsert3.cs" />
@@ -99,6 +104,7 @@
     <Compile Include="UnitTest\UInsert.cs" />
     <Compile Include="UnitTest\UJson.cs" />
     <Compile Include="UnitTest\UNavTest.cs" />
+    <Compile Include="UnitTest\UnitNavUpdatee12.cs" />
     <Compile Include="UnitTest\UnitSubToList.cs" />
     <Compile Include="UnitTest\UnitTestReturnPkList.cs" />
     <Compile Include="UnitTest\Updateable.cs" />
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Main.cs b/Src/Asp.Net/SqliteTest/UnitTest/Main.cs
index 26475559b..d3c482337 100644
--- a/Src/Asp.Net/SqliteTest/UnitTest/Main.cs
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Main.cs
@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitNavUpdatee12.Init();
             UnitFilterdafa.Init();
             UInsert3.Init();
             USaveable.Init();
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Models/Book.cs b/Src/Asp.Net/SqliteTest/UnitTest/Models/Book.cs
new file mode 100644
index 000000000..f9885c02e
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Models/Book.cs
@@ -0,0 +1,18 @@
+using SqlSugar;
+using System.Security.Principal;
+
+namespace Test.Model
+{
+    [SugarTable("BookA01")]
+    public class Book
+    {
+        [SugarColumn(ColumnName = "Id", IsPrimaryKey = true, IsIdentity = true)]
+        public int? Id { get; set; }
+
+        [SugarColumn(ColumnName = "Name")]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "PId")]
+        public int? PId { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Models/Playground.cs b/Src/Asp.Net/SqliteTest/UnitTest/Models/Playground.cs
new file mode 100644
index 000000000..ff2405bd3
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Models/Playground.cs
@@ -0,0 +1,18 @@
+using SqlSugar;
+using System.Security.Principal;
+
+namespace Test.Model
+{
+    [SugarTable("PlaygroundA01")]
+    public class Playground
+    {
+        [SugarColumn(ColumnName = "Id", IsPrimaryKey = true, IsIdentity = true)]
+        public int? Id { get; set; }
+
+        [SugarColumn(ColumnName = "Name")]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "PId")]
+        public int? PId { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Models/Room.cs b/Src/Asp.Net/SqliteTest/UnitTest/Models/Room.cs
new file mode 100644
index 000000000..1321eb9db
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Models/Room.cs
@@ -0,0 +1,18 @@
+using SqlSugar;
+using System.Security.Principal;
+
+namespace Test.Model
+{
+    [SugarTable("RoomA01")]
+    public class Room
+    {
+        [SugarColumn(ColumnName = "Id", IsPrimaryKey = true, IsIdentity = true)]
+        public int? Id { get; set; }
+
+        [SugarColumn(ColumnName = "Name")]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "PId")]
+        public int? PId { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Models/School.cs b/Src/Asp.Net/SqliteTest/UnitTest/Models/School.cs
new file mode 100644
index 000000000..76a25f42c
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Models/School.cs
@@ -0,0 +1,25 @@
+using SqlSugar;
+using System.Collections.Generic;
+using System.Security.Principal;
+
+namespace Test.Model
+{
+    [SugarTable("SchoolA01")]
+    public class School
+    {
+        [SugarColumn(ColumnName = "Id", IsPrimaryKey = true, IsIdentity = true)]
+        public int? Id { get; set; }
+
+        [SugarColumn(ColumnName = "Name")]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "PId")]
+        public int? PId { get; set; }
+
+        [Navigate(NavigateType.OneToMany, nameof(Room.PId))]
+        public List<Room> Rooms { get; set; }
+
+        [Navigate(NavigateType.OneToMany, nameof(Playground.PId))]
+        public List<Playground> Playgrounds { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/Models/Student.cs b/Src/Asp.Net/SqliteTest/UnitTest/Models/Student.cs
new file mode 100644
index 000000000..c40c920eb
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/Models/Student.cs
@@ -0,0 +1,24 @@
+using SqlSugar;
+using System.Collections.Generic;
+
+namespace Test.Model
+{
+    [SugarTable("StudentA01")]
+    public class Student
+    {
+        [SugarColumn(ColumnName = "Id", IsPrimaryKey = true, IsIdentity = true)]
+        public int? Id { get; set; }
+
+        [SugarColumn(ColumnName = "Name")]
+        public string Name { get; set; }
+
+        [SugarColumn(ColumnName = "Age")]
+        public string  Age { get; set; }
+
+        [Navigate(NavigateType.OneToMany, nameof(Book.PId))]
+        public List<Book> Books { get; set; }
+
+        [Navigate(NavigateType.OneToMany, nameof(School.PId))]
+        public List<School> Schools { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqliteTest/UnitTest/UnitNavUpdatee12.cs b/Src/Asp.Net/SqliteTest/UnitTest/UnitNavUpdatee12.cs
new file mode 100644
index 000000000..d3cbab9fa
--- /dev/null
+++ b/Src/Asp.Net/SqliteTest/UnitTest/UnitNavUpdatee12.cs
@@ -0,0 +1,99 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Design;
+using System.Linq;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading.Tasks;
+using Test.Model;
+namespace OrmTest
+{
+    public class UnitNavUpdatee12
+    {
+        public static void Init()
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<Student, School, Playground, Room, Book>();
+          
+            Demo1(db);
+            Demo2(db);
+        }
+
+        private static void Demo1(SqlSugarClient db)
+        {
+            db.DbMaintenance.TruncateTable<Student, School, Playground, Room, Book>();
+            db.InsertNav(new Student()
+            {
+                Age = "11",
+                Name = "a",
+                Books = new List<Book>() { new Book() { Name = "book" } },
+                Schools = new List<School>() {
+                   new School(){
+                       Name="学校",
+                       Playgrounds=new List<Playground>()
+                       {
+                           new Playground(){  Name="学校GR"}
+
+                       } ,
+                       Rooms=new List<Room>(){
+                             new Room() {  Name= "学校ROOM" } } }
+
+                 }
+
+            })
+            .Include(s => s.Books)
+            //   .Include(s => s.Schools)
+            .Include(s => s.Schools).ThenInclude(sc => sc.Rooms)
+            .Include(s => s.Schools).ThenInclude(sc => sc.Playgrounds)
+            .ExecuteCommand();
+            var data = db.Queryable<Student>()
+                .Includes(s => s.Books)
+                .Includes(s => s.Schools, s => s.Rooms)
+                .Includes(s => s.Schools, s => s.Playgrounds)
+                .ToList();
+            if (data.Count != 1 || data.First().Schools.Count != 1 || data.First().Schools.First().Rooms.Count() != 1 || data.First().Schools.First().Playgrounds.Count() != 1)
+            {
+                throw new Exception("unit error");
+            }
+        }
+        private static void Demo2(SqlSugarClient db)
+        {
+            db.DbMaintenance.TruncateTable<Student, School, Playground, Room, Book>();
+            db.InsertNav(new Student()
+            {
+                Age = "11",
+                Name = "a",
+                Books = new List<Book>() { new Book() { Name = "book" } },
+                Schools = new List<School>() {
+                   new School(){
+                       Name="学校",
+                       Playgrounds=new List<Playground>()
+                       {
+                           new Playground(){  Name="学校GR"}
+
+                       } ,
+                       Rooms=new List<Room>(){
+                             new Room() {  Name= "学校ROOM" } } }
+
+                 }
+
+            })
+
+            //   .Include(s => s.Schools)
+            .Include(s => s.Schools).ThenInclude(sc => sc.Rooms)
+            .Include(s => s.Schools).ThenInclude(sc => sc.Playgrounds)
+            .Include(s => s.Books)
+            .ExecuteCommand();
+            var data = db.Queryable<Student>()
+                .Includes(s => s.Books)
+                .Includes(s => s.Schools, s => s.Rooms)
+                .Includes(s => s.Schools, s => s.Playgrounds)
+                .ToList();
+            if (data.Count != 1 || data.First().Schools.Count != 1 || data.First().Schools.First().Rooms.Count() != 1 || data.First().Schools.First().Playgrounds.Count() != 1)
+            {
+                throw new Exception("unit error");
+            }
+        }
+    }
+}