diff --git a/cmd/go-portScan.go b/cmd/go-portScan.go
index 95c988e..73625f3 100644
--- a/cmd/go-portScan.go
+++ b/cmd/go-portScan.go
@@ -24,6 +24,7 @@ var (
 	ipStr       string
 	portStr     string
 	pn          bool
+	pt          bool
 	sT          bool
 	rate        int
 	sV          bool
@@ -46,6 +47,7 @@ func parseFlag(c *cli.Context) {
 	devices = c.Bool("devices")
 	pn = c.Bool("Pn")
 	rateP = c.Int("rateP")
+	pt = c.Bool("PT")
 	rate = c.Int("rate")
 	sT = c.Bool("sT")
 	sV = c.Bool("sV")
@@ -117,7 +119,7 @@ func run(c *cli.Context) error {
 	poolIpsLive, _ := ants.NewPoolWithFunc(rateP, func(ip interface{}) {
 		_ip := ip.([]net.IP)
 		for _, ip2 := range _ip {
-			if host.IsLive(ip2.String()) {
+			if host.IsLive(ip2.String(), pt, time.Duration(tcp.DefaultTcpOption.Timeout)*time.Millisecond) {
 				myLog.Printf("[+] %s is live\n", ip2.String())
 				break
 			}
@@ -297,7 +299,7 @@ func run(c *cli.Context) error {
 	// Pool - ping and port scan
 	poolPing, _ := ants.NewPoolWithFunc(rateP, func(ip interface{}) {
 		_ip := ip.(net.IP)
-		if host.IsLive(_ip.String()) {
+		if host.IsLive(_ip.String(), pt, time.Duration(option.Timeout)*time.Millisecond) {
 			portScan(_ip)
 		}
 		wgPing.Done()
@@ -362,6 +364,11 @@ func main() {
 				Usage:   "concurrent num when ping probe each ip",
 				Value:   300,
 			},
+			&cli.BoolFlag{
+				Name:  "PT",
+				Usage: "use TCP-PING mode",
+				Value: false,
+			},
 			&cli.BoolFlag{
 				Name:  "sT",
 				Usage: "TCP-mode(support IPv4 and IPv6)",
diff --git a/core/host/ping.go b/core/host/ping.go
index ff1293d..ee5ed15 100644
--- a/core/host/ping.go
+++ b/core/host/ping.go
@@ -2,29 +2,38 @@ package host
 
 import (
 	"bytes"
+	"fmt"
 	"github.com/go-ping/ping"
+	"net"
 	"os/exec"
 	"runtime"
 	"strings"
+	"sync"
 	"time"
 )
 
 var CanIcmp bool
 
+var TcpPingPorts = []uint16{80, 22, 445, 23, 443, 81, 111, 3389, 8080, 8081}
+
 // 判断是否支持发送icmp包
 func init() {
-	if IcmpOK("localhost") {
+	if IcmpOK("127.0.0.1") {
 		CanIcmp = true
 	}
 }
 
 // IsLive 判断ip是否存活
-func IsLive(ip string) bool {
+func IsLive(ip string, tcpPing bool, tcpTimeout time.Duration) (ok bool) {
 	if CanIcmp {
-		return IcmpOK(ip)
+		ok = IcmpOK(ip)
 	} else {
-		return PingOk(ip)
+		ok = PingOk(ip)
+	}
+	if !ok && tcpPing {
+		ok = TcpPing(ip, TcpPingPorts, tcpTimeout)
 	}
+	return
 }
 
 // PingOk Ping命令模式
@@ -75,3 +84,22 @@ func IcmpOK(host string) bool {
 	}
 	return false
 }
+
+// TcpPing 指定默认常见端口进行存活探测
+func TcpPing(host string, ports []uint16, timeout time.Duration) (ok bool) {
+	var wg sync.WaitGroup
+	for _, port := range ports {
+		time.Sleep(10 * time.Millisecond)
+		wg.Add(1)
+		go func(_port uint16) {
+			conn, _ := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", host, _port), timeout)
+			if conn != nil {
+				conn.Close()
+				ok = true
+			}
+			wg.Done()
+		}(port)
+	}
+	wg.Wait()
+	return
+}