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TonyRobotics · Oct 18, 2018 · fc3dd9e · fc3dd9e
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diff --git a/doc/en/RESTFUL_API.md b/doc/en/RESTFUL_API.md
@@ -220,7 +220,9 @@
 - route: `/roslaunch/start`
 - method: `GET`
 - query:
-  - `preset`: preset launch file, only `tr_hmi` available for now, `/roslaunch/start?preset=tr_hmi`
+  - `preset`: preset launch file, usage:`/roslaunch/start?preset=`, avaliable value:
+    - `tr_hmi`: start basic nodes
+    - `tr_hmi_with_cam`: start basic nodes and other nodes which used for usb camera.
 - response:
 
 ```json

diff --git a/doc/zh_CN/RESTFUL_API.md b/doc/zh_CN/RESTFUL_API.md
@@ -220,7 +220,9 @@
 - route: `/roslaunch/start`
 - method: `GET`
 - query:
-  - `preset`: launch 文件预设，目前仅支持 `tr_hmi` 一项，即 `/roslaunch/start?preset=tr_hmi`
+  - `preset`: launch 文件预设，用法：`/roslaunch/start?preset=`，目前支持两种可选参数:
+    - `tr_hmi`: 启动基础节点 launch 文件
+    - `tr_hmi_with_cam`: 启动带有 USB 摄像头相关节点的 launch 文件
 - response:
 
 ```json