diff --git a/cmd/root.go b/cmd/root.go
index 211bc7f..342f7ca 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -24,7 +24,7 @@ var rootCmd = &cobra.Command{
 	},
 }
 
-// parse subcommand and run
+// Execute parse subcommand and run
 func Execute() {
 	if err := rootCmd.Execute(); err != nil {
 		log.Fatal(err.Error())
diff --git a/constant/path.go b/constant/path.go
index ec2c0db..0465455 100644
--- a/constant/path.go
+++ b/constant/path.go
@@ -1,5 +1,6 @@
 package constant
 
 var (
-	HomePath string // db home path
+	// HomePath db home path
+	HomePath string
 )
diff --git a/constant/version.go b/constant/version.go
index 02b0172..fceda85 100644
--- a/constant/version.go
+++ b/constant/version.go
@@ -1,8 +1,11 @@
 package constant
 
-const Name = "Nali" // bin name
+// Name is the program name
+const Name = "Nali"
 
 var (
-	Version   = "unknown version" // version
-	BuildTime = "unknown time"    //build time
+	// Version like 1.0.1
+	Version = "unknown version"
+	// BuildTime like 2020-01-01
+	BuildTime = "unknown time"
 )