diff --git a/Src/Asp.Net/MySqlTest/MySqlTest.csproj b/Src/Asp.Net/MySqlTest/MySqlTest.csproj
index 8a76fd96c..ad70fd8c7 100644
--- a/Src/Asp.Net/MySqlTest/MySqlTest.csproj
+++ b/Src/Asp.Net/MySqlTest/MySqlTest.csproj
@@ -95,6 +95,7 @@
     <Compile Include="UnitTest\UCustom06.cs" />
     <Compile Include="UnitTest\UInsert.cs" />
     <Compile Include="UnitTest\UnitCustom01.cs" />
+    <Compile Include="UnitTest\UnitSameKeyBug.cs" />
     <Compile Include="UnitTest\UOneManyMany.cs" />
     <Compile Include="UnitTest\UQueue.cs" />
     <Compile Include="Program.cs" />
diff --git a/Src/Asp.Net/MySqlTest/UnitTest/Main.cs b/Src/Asp.Net/MySqlTest/UnitTest/Main.cs
index 14f097d9b..2a0a221ed 100644
--- a/Src/Asp.Net/MySqlTest/UnitTest/Main.cs
+++ b/Src/Asp.Net/MySqlTest/UnitTest/Main.cs
@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitSameKeyBug.Init();
             UOneManyMany.init();
             UDelete.Init();
             UCustom012.Init();
diff --git a/Src/Asp.Net/MySqlTest/UnitTest/UnitSameKeyBug.cs b/Src/Asp.Net/MySqlTest/UnitTest/UnitSameKeyBug.cs
new file mode 100644
index 000000000..8e866b2aa
--- /dev/null
+++ b/Src/Asp.Net/MySqlTest/UnitTest/UnitSameKeyBug.cs
@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+namespace OrmTest 
+{
+    internal class UnitSameKeyBug
+    {
+        public static void Init() 
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables(typeof(ServiceManage), typeof(UserInfo));
+            db.DbMaintenance.TruncateTable<ServiceManage, UserInfo>();
+            #region 第一次插入数据
+            int a = db.Insertable(new UserInfo() { ContacAll = new List<ContactInfo>() { new ContactInfo() {  Name="a"} }, Name = "a" }).ExecuteCommand();
+            int b = db.Insertable(new UserInfo() { ContacAll = new List<ContactInfo>() { new ContactInfo() { Name = "z" } }, Name = "b" }).ExecuteCommand();
+
+            int c = db.Insertable(new ServiceManage() { ProjectName = "ceshi", userId = 1, careId = 2 }).ExecuteCommand();
+            #endregion
+            var list = db.Queryable<ServiceManage>()
+                .LeftJoin<UserInfo>((s, ss) => s.userId == ss.Id)
+                .LeftJoin<UserInfo>((s, ss, sss) => s.careId == sss.Id)
+                .Select((s, ss, sss) => new ServiceManagementViewModel
+                { serviceManage = s, userInfo = ss, careUserInfo=sss  }).ToList();
+            if (!list.First().careUserInfo.ContacAll.Any()) 
+            {
+                throw new Exception("unit error");
+            }
+
+        }
+
+    }
+    public class UserInfo
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        public int Id { get; set; }
+        [SugarColumn(Length = 20, IsNullable = true)]
+        public string  Name { get; set; }
+        [SugarColumn(IsJson = true)]
+        public List<ContactInfo> ContacAll { get; set; }
+    }
+    public class ContactInfo
+    {
+        /// <summary>
+        /// 姓名
+        /// </summary>
+        public string Name { get; set; }
+        /// <summary>
+        /// 关系
+        /// </summary>
+        public string Relationship { get; set; }
+        /// <summary>
+        /// 手机号
+        /// </summary>
+        public string Phone { get; set; }
+        /// <summary>
+        /// 备用手机号
+        /// </summary>
+        public string Phone2 { get; set; }
+        /// <summary>
+        /// 联系地址
+        /// </summary>
+        public string Address { get; set; }
+
+    }
+    public class ServiceManagementViewModel
+    {
+        public ServiceManage serviceManage { get; set; }
+        public UserInfo userInfo { get; set; }
+        public UserInfo careUserInfo { get; set; }
+    }
+    public class ServiceManage
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        public int Id { get; set; }
+
+        [SugarColumn(Length = 20, IsNullable = true)]
+        public string  ProjectName { get; set; }
+        public int userId { get; set; }
+        public int careId { get; set; }
+
+    }
+}