diff --git a/README.md b/README.md
index 5dcfa71..d52f2d7 100644
--- a/README.md
+++ b/README.md
@@ -9,22 +9,79 @@
 
 详细使用案例如下：
 
+1. 基本操作
+
 ```rust
 use aliyun_oss_client::{types::ObjectQuery, Client, EndPoint};
 
 async fn run() -> Result<(), aliyun_oss_client::Error> {
     let client = Client::from_env()?;
 
+    // 获取 buckets 列表
     let buckes = client.get_buckets(&EndPoint::CN_QINGDAO).await?;
 
+    // 获取某一个 bucket 的文件列表
     let objects = buckes[0].get_objects(&ObjectQuery::new(), &client).await?;
 
+    // 获取文件的详细信息
     let obj_info = objects[0].get_info(&client).await?;
 
+    let object = Object::new("filename.txt");
+    // 上传文件
+    let info = object.upload("content".into(), &client).await?;
+    // 下载文件内容
+    let content = object.download(&client).await?;
+
     Ok(())
 }
 ```
 
+2. 导出 bucket 到自定义类型
+
+```rust
+#[derive(Debug, Deserialize)]
+struct MyBucket {
+    Comment: String,
+    CreationDate: String,
+    ExtranetEndpoint: EndPoint,
+    IntranetEndpoint: String,
+    Location: String,
+    Name: String,
+    Region: String,
+    StorageClass: String,
+}
+
+let list: Vec<MyBucket> = client.export_buckets(&EndPoint::CN_QINGDAO).await?;
+```
+
+3. 导出 bucket 详细信息到自定义类型
+
+```rust
+#[derive(Debug, Deserialize)]
+struct MyBucketInfo {
+    Name: String,
+}
+let res: MyBucketInfo = buckets[0].export_info(&client).await?;
+```
+
+4. 导出 object 列表到自定义
+
+```rust
+let condition = {
+    let mut map = ObjectQuery::new();
+    map.insert(ObjectQuery::MAX_KEYS, "5");
+    map
+};
+
+#[derive(Debug, Deserialize)]
+struct MyObject {
+    Key: String,
+}
+
+let (list, next_token): (Vec<MyObject>, _) =
+    buckets[0].export_objects(&condition, &client).await?;
+```
+
 # RFC
 
 get Buckets
diff --git a/examples/demo.rs b/examples/demo.rs
index fb83395..0c5f8d7 100644
--- a/examples/demo.rs
+++ b/examples/demo.rs
@@ -1,14 +1,48 @@
 use aliyun_oss_client::{types::ObjectQuery, Client, EndPoint};
+use serde::Deserialize;
 
 async fn run() -> Result<(), aliyun_oss_client::Error> {
     let client = Client::from_env()?;
 
-    let buckes = client.get_buckets(&EndPoint::CN_QINGDAO).await?;
+    let buckets = client.get_buckets(&EndPoint::CN_QINGDAO).await?;
 
-    let objects = buckes[0].get_objects(&ObjectQuery::new(), &client).await?;
+    let objects = buckets[0].get_objects(&ObjectQuery::new(), &client).await?;
 
-    let obj_info = objects[0].get_info(&client).await?;
+    let _obj_info = objects[0].get_info(&client).await?;
 
+    #[derive(Debug, Deserialize)]
+    struct MyBucket {
+        Comment: String,
+        CreationDate: String,
+        ExtranetEndpoint: EndPoint,
+        IntranetEndpoint: String,
+        Location: String,
+        Name: String,
+        Region: String,
+        StorageClass: String,
+    }
+
+    let list: Vec<MyBucket> = client.export_buckets(&EndPoint::CN_QINGDAO).await?;
+
+    #[derive(Debug, Deserialize)]
+    struct MyBucketInfo {
+        Name: String,
+    }
+    let res: MyBucketInfo = buckets[0].export_info(&client).await?;
+
+    let condition = {
+        let mut map = ObjectQuery::new();
+        map.insert(ObjectQuery::MAX_KEYS, "5");
+        map
+    };
+
+    #[derive(Debug, Deserialize)]
+    struct MyObject {
+        Key: String,
+    }
+
+    let (list, next_token): (Vec<MyObject>, _) =
+        buckets[0].export_objects(&condition, &client).await?;
     Ok(())
 }