diff --git a/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs b/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
index c00be0c33..b741dff72 100644
--- a/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
+++ b/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
@@ -22,6 +22,7 @@ namespace MongoDbTest
             QueryJson5.Init();
             QueryJson6.Init();
             QueryJson7.Init();
+            UnitJsonAndNew.Init();
             QueryLeftJoin.Init();
             QueryLeftJoin2.Init();
             QueryLeftJoin3.Init();
diff --git a/Src/Asp.NetCore2/MongoDbTest/UnitTest/QueryLeftJoin2.cs b/Src/Asp.NetCore2/MongoDbTest/UnitTest/QueryLeftJoin2.cs
index 319768767..ba234d7f1 100644
--- a/Src/Asp.NetCore2/MongoDbTest/UnitTest/QueryLeftJoin2.cs
+++ b/Src/Asp.NetCore2/MongoDbTest/UnitTest/QueryLeftJoin2.cs
@@ -99,7 +99,7 @@ namespace MongoDbTest
                studentName = s.Name,
                schoolName = sc.Name
            }).ToList();
-           if (dt7.Count != 1 || dt7.Last().studentName != "李四" || dt7.Last().schoolName != "复旦大学") Cases.ThrowUnitError();
+           if (dt7.Count != 2 || dt7.Last().studentName != "李四" || dt7.Last().schoolName != "复旦大学") Cases.ThrowUnitError();
         }
         [SqlSugar.SugarTable("UnitStudentdu2s31")]
         public class Student : MongoDbBase
diff --git a/Src/Asp.NetCore2/MongoDbTest/UnitTest/UnitJsonAndNew.cs b/Src/Asp.NetCore2/MongoDbTest/UnitTest/UnitJsonAndNew.cs
new file mode 100644
index 000000000..570f04ae9
--- /dev/null
+++ b/Src/Asp.NetCore2/MongoDbTest/UnitTest/UnitJsonAndNew.cs
@@ -0,0 +1,130 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar; 
+namespace MongoDbTest 
+{
+ 
+    public class UnitJsonAndNew
+
+    {
+
+        public static void Init()
+
+        {
+
+            { 
+                var db = DbHelper.GetNewDb();
+                db.DbMaintenance.TruncateTable<UserEntity, RolesEntity>();
+
+                db.Insertable<UserEntity>(new UserEntity { Id = 1, AccountName = "A", RoleIds = new List<long> { 1 }, RoleId = 1 }).ExecuteCommand();
+                db.Insertable<UserEntity>(new UserEntity { Id = 2, AccountName = "B", RoleIds = new List<long> { 3 }, RoleId = 1 }).ExecuteCommand();
+                db.Insertable(new RolesEntity { Id = 1, Name = "存在" }).ExecuteCommand();
+                db.Insertable(new RolesEntity { Id = 2, Name = "不存在" }).ExecuteCommand();
+
+                var query1 = db.Queryable<UserEntity>()
+
+                             .InnerJoin<RolesEntity>((u, role) => u.RoleIds.Contains(role.Id))//多个条件用&&
+
+                             .Select((u, role) => new { u.AccountName, role.Name })
+
+                             .ToList();
+
+                if (query1.Count != 1) Cases.ThrowUnitError(); 
+                if (query1.First().Name != "存在") Cases.ThrowUnitError();
+                var query2 = db.Queryable<UserEntity>()
+
+                             .LeftJoin<RolesEntity>((u, role) => u.RoleIds.Contains(role.Id))//多个条件用&&
+
+                             .Select((u, role) => new { u.AccountName, role.Name })
+
+                             .ToList();
+                if (query2.Count != 2) Cases.ThrowUnitError();
+                if (query2.First().Name!= "存在") Cases.ThrowUnitError();
+                if (query2.Last().Name != null) Cases.ThrowUnitError();
+            }
+
+        }
+
+    }
+
+
+
+    /// <summary>
+
+    /// 用户实体
+
+    /// </summary>
+
+    [SugarTable("UserComponent")]
+
+    public class UserEntity
+
+    {
+
+        /// <summary>
+
+        /// 主键Id
+
+        /// </summary>
+
+        [SugarColumn(IsPrimaryKey = true, ColumnName = "_id")]
+
+        public long Id { get; set; }
+
+
+
+        /// <summary>
+
+        /// 账户名。
+
+        /// </summary>
+
+        public string? AccountName { get; set; } = null!;
+
+
+
+        /// <summary>
+
+        /// 角色ID列表
+
+        /// </summary>
+
+        public long RoleId { get; set; }
+
+
+
+        /// <summary>
+
+        /// 角色ID列表
+
+        /// </summary>
+
+        [SugarColumn(IsJson = true)]
+
+        public List<long> RoleIds { get; set; }
+
+    }
+
+    [SugarTable("RoleComponent")]
+
+    public class RolesEntity
+
+    {
+
+        /// <summary>
+
+        /// 主键Id
+
+        /// </summary>
+
+        [SugarColumn(IsPrimaryKey = true, ColumnName = "_id")]
+
+        public long Id { get; set; }
+
+        public string? Name { get; set; }
+
+    }
+}