diff --git a/Insert-Data.md b/Insert-Data.md
index b6aa396..06880e2 100644
--- a/Insert-Data.md
+++ b/Insert-Data.md
@@ -17,13 +17,13 @@ class Topic {
 }
 
 var items = new List<Topic>();
-for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+for (var a = 0; a < 10; a++) items.Add(new Topic { Title = $"newtitle{a}", Clicks = a * 100 });
 ```
 
 ## 1. Single Insert
 
 ```csharp
-var t1 = fsql.Insert(items.First()).ExecuteAffrows();
+var t1 = fsql.Insert(items[0]).ExecuteAffrows();
 //INSERT INTO `Topic`(`Clicks`, `Title`, `CreateTime`) 
 //VALUES(@Clicks0, @Title0, @CreateTime0)
 ```
@@ -32,16 +32,16 @@ If the table has auto-increment columns, `id` will be returned after inserting d
 
 Method 1: (Original)
 ```csharp
-long id = fsql.Insert(blog).ExecuteIdentity();
-blog.Id = id;
+long id = fsql.Insert(items[0]).ExecuteIdentity();
+items[0].Id = id;
 ```
 
 Method 2: (depends on FreeSql.Repository)
 ```csharp
-var repo = fsql.GetRepository<Blog>();
-repo.Insert(blog);
+var repo = fsql.GetRepository<Topic>();
+repo.Insert(items[0]);
 ```
-> In the internal implementation, after inserting the data, the self-incremental value will be assigned to `blog.Id`
+> In the internal implementation, after inserting the data, the self-incremental value will be assigned to `items[0].Id` (support batch insert backfill)
 
 ## 2. Batch Insert
 
diff --git a/添加.md b/添加.md
index e7f491f..26909bb 100644
--- a/添加.md
+++ b/添加.md
@@ -17,31 +17,34 @@ class Topic {
 }
 
 var items = new List<Topic>();
-for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+for (var a = 0; a < 10; a++) items.Add(new Topic { Title = $"newtitle{a}", Clicks = a * 100 });
 ```
 
 ## 1、单条插入
 
 ```csharp
-var t1 = fsql.Insert(items.First()).ExecuteAffrows();
-//INSERT INTO `Topic`(`Clicks`, `Title`, `CreateTime`) 
-//VALUES(@Clicks0, @Title0, @CreateTime0)
+var t1 = fsql.Insert(items[0]).ExecuteAffrows();
+//INSERT INTO `Topic`(`Clicks`, `Title`, `CreateTime`)
+//VALUES(?Clicks0, ?Title0, ?CreateTime0)
 ```
 
 如果表有自增列，插入数据后应该要返回 id。
 
-方法1：(原始)
+方法 1：(原始)
+
 ```csharp
-long id = fsql.Insert(blog).ExecuteIdentity();
-blog.Id = id;
+long id = fsql.Insert(items[0]).ExecuteIdentity();
+items[0].Id = id;
 ```
 
-方法2：(依赖 FreeSql.Repository)
+方法 2：(依赖 FreeSql.Repository)
+
 ```csharp
-var repo = fsql.GetRepository<Blog>();
-repo.Insert(blog);
+var repo = fsql.GetRepository<Topic>();
+repo.Insert(items[0]);
 ```
-> 内部会将插入后的自增值填充给 blog.Id
+
+> 内部会将插入后的自增值填充给 items[0].Id (支持批量插入回填)
 
 ## 2、批量插入