diff --git a/README-CN.md b/README-CN.md
index f22f493..d099380 100644
--- a/README-CN.md
+++ b/README-CN.md
@@ -50,6 +50,7 @@ Release中的所有二进制版本，是通过 `build-release.sh` 脚本生成
 ### 使用方法
 
 在Mac OS X El Capitan下的帮助输出，注意默认值: 
+
 ```
 $ ./client_darwin_amd64 -h
 NAME:
@@ -80,41 +81,36 @@ GLOBAL OPTIONS:
    --dscp value                  set DSCP(6bit) (default: 0)
    --nocomp                      disable compression
    --log value                   specify a log file to output, default goes to stderr
-   -c value                      config from json file, which will override the command from shell
-   --help, -h                    show help
-   --version, -v                 print the version
-
-$ ./server_darwin_amd64 -h
-NAME:
-   kcptun - server(with SMUX)
-
 USAGE:
    server_darwin_amd64 [global options] command [command options] [arguments...]
 
 VERSION:
-   20161025
+   20170120
 
 COMMANDS:
      help, h  Shows a list of commands or help for one command
 
 GLOBAL OPTIONS:
-   --listen value, -l value  kcp server listen address (default: ":29900")
-   --target value, -t value  target server address (default: "127.0.0.1:12948")
-   --key value               pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
-   --crypt value             aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
-   --mode value              profiles: fast3, fast2, fast, normal (default: "fast")
-   --mtu value               set maximum transmission unit for UDP packets (default: 1350)
-   --sndwnd value            set send window size(num of packets) (default: 1024)
-   --rcvwnd value            set receive window size(num of packets) (default: 1024)
-   --datashard value         set reed-solomon erasure coding - datashard (default: 10)
-   --parityshard value       set reed-solomon erasure coding - parityshard (default: 3)
-   --dscp value              set DSCP(6bit) (default: 0)
-   --nocomp                  disable compression
-   --log value               specify a log file to output, default goes to stderr
-   -c value                  config from json file, which will override the command from shell
-   --help, -h                show help
-   --version, -v             print the version
+   --listen value, -l value         kcp server listen address (default: ":29900")
+   --target value, -t value         target server address (default: "127.0.0.1:12948")
+   --key value                      pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
+   --crypt value                    aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
+   --mode value                     profiles: fast3, fast2, fast, normal (default: "fast")
+   --mtu value                      set maximum transmission unit for UDP packets (default: 1350)
+   --sndwnd value                   set send window size(num of packets) (default: 1024)
+   --rcvwnd value                   set receive window size(num of packets) (default: 1024)
+   --datashard value, --ds value    set reed-solomon erasure coding - datashard (default: 10)
+   --parityshard value, --ps value  set reed-solomon erasure coding - parityshard (default: 3)
+   --dscp value                     set DSCP(6bit) (default: 0)
+   --nocomp                         disable compression
+   --snmplog value                  collect snmp to file, aware of timeformat in golang, like: ./snmp-20060102.log
+   --snmpperiod value               snmp collect period, in seconds (default: 60)
+   --log value                      specify a log file to output, default goes to stderr
+   -c value                         config from json file, which will override the command from shell
+   --help, -h                       show help
+   --version, -v                    print the version
 ```
+
 #### 分层参数图
 
 <p align="left"><img src="layeredparams.png" alt="params" height="450px"/></p>