diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UJson.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UJson.cs
index 4de365b77..8c325b559 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UJson.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UJson.cs
@@ -18,33 +18,33 @@ namespace OrmTest
             var list = Db.Queryable<UnitJsonTest>().ToList();
             UValidate.Check("order1", list.First().Order.Name, "Json");
             Db.Updateable(new UnitJsonTest() { Id = 1, Order = new Order { Id = 2, Name = "order2" } }).ExecuteCommand();
-            list= Db.Queryable<UnitJsonTest>().ToList();
+            list = Db.Queryable<UnitJsonTest>().ToList();
             UValidate.Check("order2", list.First().Order.Name, "Json");
             var list2 = Db.Queryable<UnitJsonTest>().ToList();
-            var x = new Order() { Name="a" };
+            var x = new Order() { Name = "a" };
             Db.Updateable<UnitJsonTest2>()
-                 .SetColumns(it => it.Name=="a")
-                 .Where(it=>it.Id==1)
+                 .SetColumns(it => it.Name == "a")
+                 .Where(it => it.Id == 1)
                  .ExecuteCommand();
-            var list3=Db.Queryable<UnitJsonTest>().Select(it => new
+            var list3 = Db.Queryable<UnitJsonTest>().Select(it => new
             {
                 x = it
             }).ToList();
-            if (list3[0].x == null) 
+            if (list3[0].x == null)
             {
                 throw new Exception("unit error");
             }
             var db = Db;
             db.CodeFirst.SetStringDefaultLength(200).InitTables(typeof(SqlSugarSelect.TestModel1));
             db.CodeFirst.SetStringDefaultLength(200).InitTables(typeof(SqlSugarSelect.TestModel2));
- 
+
             #region 加入数据
             var isadd = !db.Queryable<TestModel1>().Any();
             if (isadd)
             {
                 db.Insertable(new SqlSugarSelect.TestModel1
                 {
-                    Ids = new Guid []{ Guid.NewGuid() },
+                    Ids = new Guid[] { Guid.NewGuid() },
                     Titlt = "123"
                 }).ExecuteCommand();
                 db.Insertable(new SqlSugarSelect.TestModel2
@@ -60,9 +60,23 @@ namespace OrmTest
             #endregion
 
             db.CodeFirst.SetStringDefaultLength(2000).InitTables<UnitJsonTestadsga1>();
-            db.Insertable(new UnitJsonTestadsga1() { os = new List<Order>()}).ExecuteCommand();
-            db.Insertable(new UnitJsonTestadsga1() {  os = new List<Order>() { new Order() {  CreateTime=DateTime.Now} } }).ExecuteCommand();
-            var list10= db.Queryable<UnitJsonTestadsga1>().Select(it => new { it }).ToList();
+            db.Insertable(new UnitJsonTestadsga1() { os = new List<Order>() }).ExecuteCommand();
+            db.Insertable(new UnitJsonTestadsga1() { os = new List<Order>() { new Order() { CreateTime = DateTime.Now } } }).ExecuteCommand();
+            var list10 = db.Queryable<UnitJsonTestadsga1>().Select(it => new { it }).ToList();
+
+            var jsonDb = Db;
+            jsonDb.CurrentConnectionConfig.ConfigureExternalServices = new SqlSugar.ConfigureExternalServices()
+            {
+                EntityService = (c, p) =>
+                {
+                    p.IsJson = true;
+                }
+            };
+            var list11 = jsonDb.Queryable<UNITJSONTESTADSGA1>().Select(it => new { it }).ToList();
+            if (list11.FirstOrDefault().it.os == null) 
+            {
+                throw new Exception("unit test");
+            }
         }
     }
     public class UnitJsonTestadsga1
@@ -70,6 +84,11 @@ namespace OrmTest
         [SqlSugar.SugarColumn(Length =2000,IsJson =true)]
         public List<Order>  os{get;set;}
     }
+    public class UNITJSONTESTADSGA1
+    {
+        [SqlSugar.SugarColumn(Length = 2000)]
+        public List<Order> os { get; set; }
+    }
     public class UnitJsonTest2
     {
         [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]