diff --git a/Src/Asp.NetCore2/SqlSeverTest/UnitTest/Main.cs b/Src/Asp.NetCore2/SqlSeverTest/UnitTest/Main.cs
index 8c5bad898..543c2df24 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/UnitTest/Main.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/UnitTest/Main.cs
@@ -30,6 +30,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitOneToMany1231123.Init();
             OneToManyInString.Init();
             UnitSplitTask.Init();
             UinitUpdateNavOneToOne.Init();
diff --git a/Src/Asp.NetCore2/SqlSeverTest/UnitTest/UnitOneToManyUpdate21.cs b/Src/Asp.NetCore2/SqlSeverTest/UnitTest/UnitOneToManyUpdate21.cs
new file mode 100644
index 000000000..dc11c56b7
--- /dev/null
+++ b/Src/Asp.NetCore2/SqlSeverTest/UnitTest/UnitOneToManyUpdate21.cs
@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OrmTest
+{
+    public class UnitOneToMany1231123
+    {
+        public static void Init()
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<UnitPerson011, UnitAddress011>();
+            db.DbMaintenance.TruncateTable<UnitPerson011, UnitAddress011>();
+
+            var address = new UnitAddress011
+            {
+                Street = "123 Main Street"
+            };
+            int addressId = db.Insertable(address).ExecuteReturnIdentity();
+
+            // 创建 UnitPerson011 对象并插入记录
+            var person = new UnitPerson011
+            {
+                Name = "John Doe",
+                AddressId = addressId
+            };
+            int personId = db.Insertable(person).ExecuteReturnIdentity();
+
+            var list = db.Queryable<UnitAddress011>().Includes(x => x.Persons).ToList();
+
+            var list2=db.Queryable<UnitAddress011>().Includes(x=>x.Persons).First();
+            list2.Persons.First().Name = "Update";
+            list2.Persons.Add(new UnitPerson011() { 
+             Name="jack",
+              AddressId=addressId
+            });
+            db.UpdateNav(list2)
+                .Include(x => x.Persons,new SqlSugar.UpdateNavOptions()
+                { 
+                     OneToManyInsertOrUpdate = true,
+                }).ExecuteCommand();
+
+            var list3 = db.Queryable<UnitAddress011>().Includes(x => x.Persons).First();
+            if (list3.Persons.Count() != 2 || list3.Persons.First().Name != "Update" || list3.Persons.Last().Name != "jack") 
+            {
+                throw new Exception("unit error");
+            }
+
+            list3.Persons.Remove(list3.Persons.Last());
+            list3.Persons.First().Name = "Update2";
+            db.UpdateNav(list3)
+                .Include(x => x.Persons, new SqlSugar.UpdateNavOptions()
+                {
+                    OneToManyInsertOrUpdate = true,
+                }).ExecuteCommand();
+
+           var list4 = db.Queryable<UnitAddress011>().Includes(x => x.Persons).First();
+;            if (list4.Persons.Count() != 1 || list4.Persons.First().Name != "Update2" )
+            {
+                throw new Exception("unit error");
+            }
+
+        }
+        [SqlSugar.SugarTable("UnitPerson0112s22a2")]
+        public class UnitPerson011
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int Id { get; set; }
+            public string Name { get; set; }
+            public int AddressId { get; set; }
+        }
+        [SqlSugar.SugarTable("UnitAddress0110112s22a2")]
+        public class UnitAddress011
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int Id { get; set; }
+            public string Street { get; set; }
+            [SqlSugar.Navigate(SqlSugar.NavigateType.OneToMany, nameof(UnitPerson011.AddressId))]
+            public List<UnitPerson011> Persons { get; set; }
+        }
+    }
+
+}