diff --git a/doc/design/file_mananger/README.md b/doc/design/file_mananger/README.md
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+# Desgin doc: FileManager
+## Objetive
+在本文档中，我们设计说明了用户上传、下载、管理自己在PaddlePaddle Cloud上的文件所涉及到的模块和流程
+<image src=./src/filemanager.png width=600>
+
+## Module
+### Client
+Client是用户操作的界面，支持的命令如下
+
+- ls
+ 
+```bash
+ls
+```
+
+- cp
+
+```bash
+cp 
+```
+
+- sync
+
+```bash
+sync
+```
+
+- mv
+
+```bash
+mv
+```
+
+
+### Ingress
+- 在kubernets中运行
+- 做Http转发
+- 注意配置session保持
+
+
+### FileServer
+FileServer是gorpc写的HttpServer, 用来接收Client的REST API的请求，自身由kubernets来管理。
+REST API说明
+
+- file
+
+```
+GET /file: Get attribue of files
+POST /file: Touch a file 
+DELETE /file: Delete a File
+```
+
+- chunk
+ 
+```
+GET /file/chunk: Get a chunk info 
+POST /file/chunk: Update a chunk
+```
+
+- dir
+
+```
+GET /dir: List all files in a directory
+POST /dir: Touch a directory
+DELETE /dir: Delete a directory
+```
+
+
+## 流程
+### cp
+### 断点续传
+### sync
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