diff --git a/README.md b/README.md
index 243a107..dddf6cd 100644
--- a/README.md
+++ b/README.md
@@ -3,10 +3,13 @@
 [![CircleCI](https://circleci.com/gh/royeo/git-checkout-branch.svg?style=shield)](https://circleci.com/gh/royeo/git-checkout-branch)
 [![Go Report Card](https://goreportcard.com/badge/royeo/git-checkout-branch)](https://goreportcard.com/report/royeo/git-checkout-branch)
 
-Switch git branches interactively.
-
 The `git checkout-branch` command is a custom git command to improve the efficiency of switching branches.
 
+## Features
+
+- switch git branch interactively
+- search git branch dynamically
+
 ## Overview
 
 ![](https://raw.githubusercontent.com/royeo/static/master/gif/git-checkout-branch.gif)
@@ -43,15 +46,16 @@ git config --global alias.cb checkout-branch
 Use `git checkout-branch help` for help information.
 
 ```
-Switch git branch interactively.
+Checkout git branches more efficiently.
 
 Usage:
   git checkout-branch [flags]
 
 Flags:
-  -r    List the remote-tracking branches
-  -a    List both remote-tracking branches and local branches
-  -n    Set the number of branches displayed in the list, defaults to 10
+  -a, --all          List both remote-tracking branches and local branches
+  -r, --remotes      List the remote-tracking branches
+  -n, --number       Set the number of branches displayed in the list (default 10)
+      --hide-help    Hide the help information
 ```
 
 ## License
diff --git a/main.go b/main.go
index 5ce247e..ff06b24 100644
--- a/main.go
+++ b/main.go
@@ -24,7 +24,7 @@ var rootCmd = &cobra.Command{
 	Short: "Checkout git branches more efficiently.",
 	Run: func(cmd *cobra.Command, args []string) {
 		if len(args) > 0 {
-			cmd.Usage()
+			cmd.Help()
 			os.Exit(1)
 		}
 
@@ -63,8 +63,7 @@ Flags:
   -a, --all          List both remote-tracking branches and local branches
   -r, --remotes      List the remote-tracking branches
   -n, --number       Set the number of branches displayed in the list (default 10)
-      --hide-help    Hide the help information
-  -h, --help         Help for git-checkout-branch`
+      --hide-help    Hide the help information`
 		fmt.Println(usage)
 		os.Exit(1)
 		return nil