diff --git a/dial/dial.go b/dial/dial.go
index 2a0b2b8..99486d4 100644
--- a/dial/dial.go
+++ b/dial/dial.go
@@ -2,6 +2,7 @@ package dial
 
 import (
 	"fmt"
+	"github.com/fatih/color"
 	"net"
 	"time"
 )
@@ -14,13 +15,15 @@ func PortDial(address, port, protocol string, timeout int) {
 	}
 	fmt.Printf("%v ping %v (%v) via port %v (timeout: %vs)...\n", protocol, address, ip, port, timeout)
 	dialTarget := ip + ":" + port
+	red := color.New(color.FgRed).SprintFunc()
+	green := color.New(color.FgGreen).SprintFunc()
 	for {
 		startTime := time.Now()
 		conn, err := net.DialTimeout(protocol, dialTarget, time.Duration(timeout)*time.Second)
 		endTime := time.Now()
 		elapsedTime := float64(endTime.Sub(startTime)) / float64(time.Millisecond)
 		if err != nil {
-			fmt.Printf("TIMEOUT via %v:%v time=%v ms\n", ip, port, elapsedTime)
+			fmt.Printf("%s via %v:%v time=%v ms\n", red("TIMEOUT"), ip, port, elapsedTime)
 			time.Sleep(time.Duration(timeout) * time.Second)
 
 		} else {
@@ -28,7 +31,7 @@ func PortDial(address, port, protocol string, timeout int) {
 			if err != nil {
 				return
 			}
-			fmt.Printf("OK via %v:%v time=%v ms\n", ip, port, elapsedTime)
+			fmt.Printf("%s via %v:%v time=%v ms\n", green("OK"), ip, port, elapsedTime)
 			time.Sleep(time.Duration(1) * time.Second)
 			continue
 		}
diff --git a/go.mod b/go.mod
index 419c915..10b8fc3 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,10 @@
 module pong
 
 go 1.19
+
+require (
+	github.com/fatih/color v1.13.0 // indirect
+	github.com/mattn/go-colorable v0.1.9 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
+)
diff --git a/goping/goping.go b/goping/goping.go
index 250db65..5d9d390 100644
--- a/goping/goping.go
+++ b/goping/goping.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
+	"github.com/fatih/color"
 	"net"
 	"os"
 	"os/signal"
@@ -162,8 +163,9 @@ func Ping(domain string, PS int) {
 }
 
 func foot(address string, icmp_seq int, dropPack, min_lan, avg_lan, max_lan float64, ret_list []float64) {
+	red := color.New(color.FgRed).SprintFunc()
 	fmt.Printf("\n--- %s ping statistics ---\n", address)
-	fmt.Printf("%d packets transmitted, %f lost, %.2f%% packet loss, time 1000ms\n", icmp_seq, dropPack, dropPack/float64(icmp_seq)*100)
+	fmt.Printf("%d packets transmitted, %f lost, %.2f%% packet loss, time 1000ms\n", icmp_seq, red(dropPack), dropPack/float64(icmp_seq)*100)
 	if len(ret_list) == 0 {
 		avg_lan = 3000.0
 	} else {
diff --git a/goping/ping_test.go b/goping/ping_test.go
index c38a01c..2dcd47c 100644
--- a/goping/ping_test.go
+++ b/goping/ping_test.go
@@ -2,12 +2,30 @@ package goping
 
 import (
 	"fmt"
+	"github.com/fatih/color"
 	"os"
 	"os/signal"
 	"testing"
 	"time"
 )
 
+func TestColor(tt *testing.T) {
+	// Create SprintXxx functions to mix strings with other non-colorized strings:
+	yellow := color.New(color.FgYellow).SprintFunc()
+	red := color.New(color.FgRed).SprintFunc()
+	fmt.Printf("This is a %s and this is %s.\n", yellow("warning"), red("error"))
+
+	info := color.New(color.FgWhite, color.BgGreen).SprintFunc()
+	fmt.Printf("This %s rocks!\n", info("package"))
+
+	// Use helper functions
+	fmt.Println("This", color.RedString("warning"), "should be not neglected.")
+	fmt.Printf("%v %v\n", color.GreenString("Info:"), "an important message.")
+
+	// Windows supported too! Just don't forget to change the output to color.Output
+	fmt.Fprintf(color.Output, "Windows support: %s", color.GreenString("PASS"))
+
+}
 func TestSign(tt *testing.T) {
 	c := make(chan os.Signal, 1)
 	for {
diff --git a/pong.go b/pong.go
index 7039674..cc75a8c 100644
--- a/pong.go
+++ b/pong.go
@@ -4,11 +4,9 @@ import (
 	"flag"
 	"fmt"
 	"os"
-	"os/signal"
 	"pong/dial"
 	"pong/goping"
 	"strconv"
-	"time"
 )
 
 // 定义命令行参数对应的变量，这三个变量都是指针类型
@@ -22,22 +20,6 @@ pong www.baidu.com 443 -t 1 -k udp
 pong -a www.baidu.com -p 443 -k tcp -t 3
 `
 
-func main2() {
-	c := make(chan os.Signal, 1)
-	signal.Notify(c, os.Interrupt, os.Kill)
-	for {
-		select {
-		case s := <-c:
-			fmt.Println("ctc")
-			fmt.Println("Got signal:", s)
-			os.Exit(0)
-		default:
-			fmt.Println("okok")
-			time.Sleep(time.Second * 1)
-		}
-	}
-}
-
 func main() {
 	address := flag.String("a", "", "domain or ip address")
 	port := flag.Int("p", 0, "port")
diff --git a/readme.md b/readme.md
index 8dae8be..70deb01 100644
--- a/readme.md
+++ b/readme.md
@@ -7,6 +7,7 @@ pong -a www.baidu.com -p 443 -k tcp -t 3
 
 
 ## build
+```bash
 cd /root
 rm -rf pong
 git clone https://git.sre.ink/go/pong.git
@@ -14,4 +15,5 @@ cd pong
 CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on GOPROXY="https://goproxy.cn,direct" go build -v -a -o pong pong.go
 rm -rf /usr/bin/pong
 mv pong /usr/bin/
-pong www.baidu.com 443
\ No newline at end of file
+pong www.baidu.com 443
+```
\ No newline at end of file