diff --git a/README.md b/README.md
index 48ea2f61..73a5de03 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,11 @@
-# Hprose Invocation Proxy Implementation Generator
+## Hprose Invocation Proxy Implementation Generator
 
 Copyright (c) 2008-2016 http://hprose.com
 
-hipig -i:IExample.cs -r:Hprose.Client.dll -o:Example.cs
+```hipig -i:IExample.cs -r:Hprose.Client.dll -o:Example.cs```
 
+```
   -input:FILE1[,FILEn]  Input files (short: -i)
   -output:FILE          Output files (short: -o)
-  -reference:A1[,An]    Imports metadata from the specified assembly (short: -r)
\ No newline at end of file
+  -reference:A1[,An]    Imports metadata from the specified assembly (short: -r)
+```