diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed6243af..460529fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -48,3 +48,5 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Using method `.Get(queryParamName)` to get an url query param.
 - Replaced `errors.New(...)` to `fmt.Errorf(...)`.
 - Replaced types string on config params `liveon` and `hlson` to booleans `live: true/false` and `hls: true/false`
+- Using viper for config, allow use file, cloud providers, environment vars or flags.
+- Using yaml config by default.
diff --git a/README.md b/README.md
index a9e01602..15cdfc25 100644
--- a/README.md
+++ b/README.md
@@ -30,10 +30,24 @@ Run `docker run -p 1935:1935 -p 7001:7001 -p 7002:7002 -d --name livego gwuhaoli
 
 #### Compile from source
 1. Download the source code `git clone https://github.com/gwuhaolin/livego.git`
-2. Go to the livego directory and execute `go build` or `make run`
+2. Go to the livego directory and execute `go build` or `make build`
 
 ## Use
-2. Start the service: execute the livego binary file to start the livego service;
+```bash
+./livego  -h
+Usage of ./livego:
+      --api_addr string       HTTP manage interface server listen address (default ":8090")
+      --config_file string    configure filename (default "livego.yaml")
+      --flv_dir string        output flv file at flvDir/APP/KEY_TIME.flv (default "tmp")
+      --gop_num int           gop num (default 1)
+      --hls_addr string       HLS server listen address (default ":7002")
+      --httpflv_addr string   HTTP-FLV server listen address (default ":7001")
+      --level string          Log level (default "info")
+      --read_timeout int      read time out (default 10)
+      --rtmp_addr string      RTMP server listen address (default ":1935")
+      --write_timeout int     write time out (default 10)
+```
+2. Start the service: execute the livego binary file or `make run` to start the livego service;
 3. Upstream push: Push the video stream to `rtmp://localhost:1935/live/movie` through the` RTMP` protocol, for example, use `ffmpeg -re -i demo.flv -c copy -f flv rtmp://localhost:1935/live/movie` push;
 4. Downstream playback: The following three playback protocols are supported, and the playback address is as follows:
     -`RTMP`:`rtmp://localhost:1935/live/movie`