diff --git a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
index a3fa6cbf..516fdbd9 100644
--- a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
+++ b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntity.cs
@@ -143,6 +143,19 @@ namespace FreeSql
             this.Repository.UnitOfWork = UnitOfWork.Current.Value;
             return this.Repository.InsertOrUpdate(this as TEntity);
         }
+
+        /// <summary>
+        /// 【完整】保存导航属性，子表
+        /// </summary>
+        /// <param name="navigatePropertyName">导航属性名</param>
+        public virtual void SaveMany(string navigatePropertyName)
+        {
+            if (this.Repository == null)
+                this.Repository = Orm.GetRepository<TEntity>();
+
+            this.Repository.UnitOfWork = UnitOfWork.Current.Value;
+            this.Repository.SaveMany(this as TEntity, navigatePropertyName);
+        }
     }
 }
 
diff --git a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
index e9b33458..0d412cdb 100644
--- a/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
+++ b/Extensions/FreeSql.Extensions.BaseEntity/BaseEntityAsync.cs
@@ -125,6 +125,19 @@ namespace FreeSql
             this.Repository.UnitOfWork = UnitOfWork.Current.Value;
             return this.Repository.InsertOrUpdateAsync(this as TEntity);
         }
+
+        /// <summary>
+        /// 【完整】保存导航属性，子表
+        /// </summary>
+        /// <param name="navigatePropertyName">导航属性名</param>
+        public virtual Task SaveManyAsync(string navigatePropertyName)
+        {
+            if (this.Repository == null)
+                this.Repository = Orm.GetRepository<TEntity>();
+
+            this.Repository.UnitOfWork = UnitOfWork.Current.Value;
+            return this.Repository.SaveManyAsync(this as TEntity, navigatePropertyName);
+        }
     }
 }
 
diff --git a/Extensions/FreeSql.Extensions.BaseEntity/Net40/BaseEntity.cs b/Extensions/FreeSql.Extensions.BaseEntity/Net40/BaseEntity.cs
index 03bfa3a9..41742013 100644
--- a/Extensions/FreeSql.Extensions.BaseEntity/Net40/BaseEntity.cs
+++ b/Extensions/FreeSql.Extensions.BaseEntity/Net40/BaseEntity.cs
@@ -104,6 +104,18 @@ namespace FreeSql
 
             return this.Repository.InsertOrUpdate(this as TEntity);
         }
+
+        /// <summary>
+        /// 【完整】保存导航属性，子表
+        /// </summary>
+        /// <param name="navigatePropertyName">导航属性名</param>
+        public virtual void SaveMany(string navigatePropertyName)
+        {
+            if (this.Repository == null)
+                this.Repository = Orm.GetRepository<TEntity>();
+
+            this.Repository.SaveMany(this as TEntity, navigatePropertyName);
+        }
     }
 }
 
diff --git a/FreeSql.DbContext/DbSet/DbSetAsync.cs b/FreeSql.DbContext/DbSet/DbSetAsync.cs
index cec6c1b2..1dfb5296 100644
--- a/FreeSql.DbContext/DbSet/DbSetAsync.cs
+++ b/FreeSql.DbContext/DbSet/DbSetAsync.cs
@@ -174,10 +174,15 @@ namespace FreeSql
                         else whereParentExp = Expression.AndAlso(whereParentExp, whereExp);
                     }
                     var propValEach = GetItemValue(item, prop) as IEnumerable;
-                    await _db.Orm.Delete<object>().AsType(tref.RefEntityType)
+                    var subDelete = _db.Orm.Delete<object>().AsType(tref.RefEntityType)
                         .WithTransaction(_uow?.GetOrBeginTransaction())
-                        .Where(Expression.Lambda<Func<object, bool>>(whereParentExp, deleteWhereParentParam))
-                        .WhereDynamic(propValEach, true).ExecuteAffrowsAsync();
+                        .Where(Expression.Lambda<Func<object, bool>>(whereParentExp, deleteWhereParentParam));
+                    foreach (var propValItem in propValEach)
+                    {
+                        subDelete.WhereDynamic(propValEach, true);
+                        break;
+                    }
+                    await subDelete.ExecuteAffrowsAsync();
                 }
             }
             finally
diff --git a/FreeSql.DbContext/DbSet/DbSetSync.cs b/FreeSql.DbContext/DbSet/DbSetSync.cs
index 10a10f57..7ffb4adc 100644
--- a/FreeSql.DbContext/DbSet/DbSetSync.cs
+++ b/FreeSql.DbContext/DbSet/DbSetSync.cs
@@ -186,10 +186,15 @@ namespace FreeSql
                         else whereParentExp = Expression.AndAlso(whereParentExp, whereExp);
                     }
                     var propValEach = GetItemValue(item, prop) as IEnumerable;
-                    _db.Orm.Delete<object>().AsType(tref.RefEntityType)
+                    var subDelete = _db.Orm.Delete<object>().AsType(tref.RefEntityType)
                         .WithTransaction(_uow?.GetOrBeginTransaction())
-                        .Where(Expression.Lambda<Func<object, bool>>(whereParentExp, deleteWhereParentParam))
-                        .WhereDynamic(propValEach, true).ExecuteAffrows();
+                        .Where(Expression.Lambda<Func<object, bool>>(whereParentExp, deleteWhereParentParam));
+                    foreach (var propValItem in propValEach)
+                    {
+                        subDelete.WhereDynamic(propValEach, true);
+                        break;
+                    }
+                    subDelete.ExecuteAffrows();
                 }
             }
             finally
diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index 2735cefb..ca7c357b 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -110,6 +110,13 @@
             清空状态数据
             </summary>
         </member>
+        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
+            <summary>
+            根据 lambda 条件删除数据
+            </summary>
+            <param name="predicate"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加
diff --git a/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs b/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
index 3097044b..7d0a479e 100644
--- a/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
+++ b/FreeSql.Tests/FreeSql.Tests.DbContext/RepositoryTests.cs
@@ -335,6 +335,57 @@ namespace FreeSql.Tests
             public Guid CagetoryId { get; set; }
             public string Name { get; set; }
         }
+        [Fact]
+        public void SaveMany_OneToMany()
+        {
+            var repo = g.sqlite.GetRepository<Cagetory>();
+            repo.DbContextOptions.EnableAddOrUpdateNavigateList = false; //�رռ������湦��
+            var cts = new[] {
+                new Cagetory
+                {
+                    Name = "����1",
+                    Goodss = new List<Goods>(new[]
+                    {
+                        new Goods { Name = "��Ʒ1" },
+                        new Goods { Name = "��Ʒ2" },
+                        new Goods { Name = "��Ʒ3" }
+                    })
+                },
+                new Cagetory
+                {
+                    Name = "����2",
+                    Goodss = new List<Goods>(new[]
+                    {
+                        new Goods { Name = "��Ʒ4" },
+                        new Goods { Name = "��Ʒ5" }
+                    })
+                }
+            };
+            repo.Insert(cts);
+            repo.SaveMany(cts[0], "Goodss"); //ָ������ Goodss һ�Զ�����
+            repo.SaveMany(cts[1], "Goodss"); //ָ������ Goodss һ�Զ�����
+            cts[0].Goodss.RemoveAt(1);
+            cts[1].Goodss.RemoveAt(1);
+            repo.SaveMany(cts[0], "Goodss"); //ָ������ Goodss һ�Զ�����
+            repo.SaveMany(cts[1], "Goodss"); //ָ������ Goodss һ�Զ�����
+
+            cts[0].Name = "����11";
+            cts[0].Goodss.Clear();
+            cts[1].Name = "����22";
+            cts[1].Goodss.Clear();
+            repo.Update(cts);
+            repo.SaveMany(cts[0], "Goodss"); //ָ������ Goodss һ�Զ�����
+            repo.SaveMany(cts[1], "Goodss"); //ָ������ Goodss һ�Զ�����
+            cts[0].Name = "����111";
+            cts[0].Goodss.Clear();
+            cts[0].Goodss.Add(new Goods { Name = "��Ʒ33" });
+            cts[1].Name = "����222";
+            cts[1].Goodss.Clear();
+            cts[1].Goodss.Add(new Goods { Name = "��Ʒ55" });
+            repo.Update(cts);
+            repo.SaveMany(cts[0], "Goodss"); //ָ������ Goodss һ�Զ�����
+            repo.SaveMany(cts[1], "Goodss"); //ָ������ Goodss һ�Զ�����
+        }
 
         [Fact]
         public void EnableAddOrUpdateNavigateList_OneToMany_Parent()
@@ -417,7 +468,7 @@ namespace FreeSql.Tests
                 }
             };
             var repo = g.sqlite.GetRepository<Song>();
-            //repo.DbContextOptions.EnableAddOrUpdateNavigateList = false; //�رռ������湦��
+            repo.DbContextOptions.EnableAddOrUpdateNavigateList = true; //�򿪼������湦��
             repo.Insert(ss);
             //repo.SaveMany(ss[0], "Tags"); //ָ������ Tags ��Զ�����