diff --git a/docs/light/update_API_docs.md b/docs/light/update_API_docs.md
index bcfa48a097..d9d51d0075 100644
--- a/docs/light/update_API_docs.md
+++ b/docs/light/update_API_docs.md
@@ -1,18 +1,18 @@
 # How to update API docs
 
-Due to the rest handlers and related data structures are distributed in many sub-folds, currently there is no tool which can automatically extract all APIs information and generate API docs. So here we have to write APIs' docs manually.
+Due to the rest handlers and related data structures are complicated and distributed in many sub-folds, currently there is no tool which can automatically extract all APIs information and generate API docs. So here we have to write APIs' docs manually.
 
 ## Steps
  
 1. Install the swagger-ui generate tool first.
     ```
-    make update_dev_tools
+    make get_tools
     ```
 2. Edit API docs
-    1. Directly Edit API docs manually: `client/lcd/swaggerui/swagger.json`
-    2. Edit API docs within this [SwaggerHub](https://app.swaggerhub.com). Please refer to this [document](https://app.swaggerhub.com/help/index) for how to use the about website to edit API docs.
-3. Download `swagger.json` and replace the old `swagger.json` under `client/lcd/swaggerui` folds
-4. Compile new gaiacli
+    1. Directly Edit API docs manually: `client/lcd/swagger-ui/swagger.json`.
+    2. Edit API docs within [SwaggerHub](https://app.swaggerhub.com). Please refer to this [document](https://app.swaggerhub.com/help/index) for how to use the about website to edit API docs.
+3. Download `swagger.json` and replace the old `swagger.json` under fold `client/lcd/swagger-ui`.
+4. Compile gaiacli
     ```
     make install
     ```
\ No newline at end of file