diff --git a/cmd/main.go b/cmd/main.go
index b5bd0ea..8f0a07f 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"os"
 	"strings"
 
 	. "github.com/oneclickvirt/defaultset"
@@ -16,19 +17,26 @@ func main() {
 		http.Get("https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Foneclickvirt%2Fspeedtest&count_bg=%2323E01C&title_bg=%23555555&icon=sonarcloud.svg&icon_color=%23E7E7E7&title=hits&edge_flat=false")
 	}()
 	fmt.Println("项目地址:", Blue("https://github.com/oneclickvirt/speedtest"))
-	var showVersion, nearByServer, showHead bool
+	var showVersion, nearByServer, showHead, help bool
 	var language, operator, platform, testMethod string
 	var num int
-	flag.BoolVar(&showVersion, "v", false, "Show version information")
-	flag.BoolVar(&nearByServer, "nearby", false, "Test only nearby servers")
-	flag.BoolVar(&showHead, "s", true, "Show head")
-	flag.BoolVar(&model.EnableLoger, "e", false, "Enable logging")
-	flag.StringVar(&language, "l", "zh", "Language parameter (options: en, zh)")
-	flag.StringVar(&platform, "pf", "net", "Platform parameter (options: net, cn)")
-	flag.StringVar(&operator, "opt", "global", "Operator parameter (options: cmcc, cu, ct, sg, tw, jp, hk, global)")
-	flag.StringVar(&testMethod, "m", "speedtest", "Test Method parameter (options: origin, speedtest, speedtest-go)")
-	flag.IntVar(&num, "num", -1, "Number of test servers, default -1 not to limit")
-	flag.Parse()
+	speedtestFlag := flag.NewFlagSet("speedtest", flag.ContinueOnError)
+	speedtestFlag.BoolVar(&help, "h", false, "Show help information")
+	speedtestFlag.BoolVar(&showVersion, "v", false, "Show version information")
+	speedtestFlag.BoolVar(&nearByServer, "nearby", false, "Test only nearby servers")
+	speedtestFlag.BoolVar(&showHead, "s", true, "Show head")
+	speedtestFlag.BoolVar(&model.EnableLoger, "e", false, "Enable logging")
+	speedtestFlag.StringVar(&language, "l", "zh", "Language parameter (options: en, zh)")
+	speedtestFlag.StringVar(&platform, "pf", "net", "Platform parameter (options: net, cn)")
+	speedtestFlag.StringVar(&operator, "opt", "global", "Operator parameter (options: cmcc, cu, ct, sg, tw, jp, hk, global)")
+	speedtestFlag.StringVar(&testMethod, "m", "speedtest", "Test Method parameter (options: origin, speedtest, speedtest-go)")
+	speedtestFlag.IntVar(&num, "num", -1, "Number of test servers, default -1 not to limit")
+	speedtestFlag.Parse(os.Args[1:])
+	if help {
+		fmt.Printf("Usage: %s [options]\n", os.Args[0])
+		speedtestFlag.PrintDefaults()
+		return
+	}
 	if showVersion {
 		fmt.Println(model.SpeedTestVersion)
 		return