diff --git a/cmd/cmd.go b/cmd/cmd.go
index ab2e7997..f1af1f7d 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -114,6 +114,7 @@ func Excute() {
 			Timeout:        time.Duration(*timeout) * time.Millisecond,
 			File:           *file,
 			DontFragment:   *dontFragment,
+			Dot:			*dot,
 		}
 
 		fastTrace.FastTest(*tcp, *output, paramsFastTrace)
diff --git a/fast_trace/fast_trace ipv6.go b/fast_trace/fast_trace ipv6.go
index dc633b30..68a0ad25 100644
--- a/fast_trace/fast_trace ipv6.go	
+++ b/fast_trace/fast_trace ipv6.go	
@@ -20,7 +20,8 @@ func (f *FastTracer) tracert_v6(location string, ispCollection ISPCollection) {
 	fmt.Fprintf(color.Output, "%s\n", color.New(color.FgYellow, color.Bold).Sprintf("『%s %s 』", location, ispCollection.ISPName))
 	fmt.Printf("traceroute to %s, %d hops max, %d byte packets\n", ispCollection.IPv6, f.ParamsFastTrace.MaxHops, f.ParamsFastTrace.PktSize)
 
-	ip, err := util.DomainLookUp(ispCollection.IPv6, "6", "", true)
+	// ip, err := util.DomainLookUp(ispCollection.IPv6, "6", "", true)
+	ip, err := util.DomainLookUp(ispCollection.IPv6, "6", f.ParamsFastTrace.Dot, true)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -126,7 +127,7 @@ func FastTestv6(tm bool, outEnable bool, paramsFastTrace ParamsFastTrace) {
 
 	oe = outEnable
 
-	fmt.Println("您想测试哪些ISP的路由？\n1. 国内四网\n2. 电信\n3. 联通\n4. 移动\n5. 教育网\n6. 全部")
+	fmt.Println("您想测试哪些ISP的路由？\n1. 北京三网快速测试\n2. 全国电信\n3. 全国联通\n4. 全国移动\n5. 全国教育网\n6. 全国五网")
 	fmt.Print("请选择选项：")
 	_, err := fmt.Scanln(&c)
 	if err != nil {
diff --git a/fast_trace/fast_trace.go b/fast_trace/fast_trace.go
index 778b51c5..5824a468 100644
--- a/fast_trace/fast_trace.go
+++ b/fast_trace/fast_trace.go
@@ -35,6 +35,7 @@ type ParamsFastTrace struct {
 	Timeout        time.Duration
 	File           string
 	DontFragment   bool
+	Dot			   string
 }
 
 type IpListElement struct {
@@ -49,7 +50,8 @@ func (f *FastTracer) tracert(location string, ispCollection ISPCollection) {
 	fmt.Fprintf(color.Output, "%s\n", color.New(color.FgYellow, color.Bold).Sprintf("『%s %s 』", location, ispCollection.ISPName))
 	fmt.Printf("traceroute to %s, %d hops max, %d byte packets\n", ispCollection.IP, f.ParamsFastTrace.MaxHops, f.ParamsFastTrace.PktSize)
 
-	ip, err := util.DomainLookUp(ispCollection.IP, "4", "", true)
+	// ip, err := util.DomainLookUp(ispCollection.IP, "4", "", true)
+	ip, err := util.DomainLookUp(ispCollection.IP, "4", f.ParamsFastTrace.Dot, true)
 	if err != nil {
 		log.Fatal(err)
 	}