diff --git a/cmd/cmd.go b/cmd/cmd.go
index b8620d5..2374d8d 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -236,6 +236,15 @@ func Excute() {
 		conf.AsyncPrinter = nil
 	}
 
+	if util.Uninterrupted != "" || *rawPrint {
+		for {
+			_, err := trace.Traceroute(m, conf)
+			if err != nil {
+				fmt.Println(err)
+			}
+		}
+	}
+
 	res, err := trace.Traceroute(m, conf)
 
 	if err != nil {
diff --git a/ipgeo/leo.go b/ipgeo/leo.go
index d8b5382..2cbf0d6 100644
--- a/ipgeo/leo.go
+++ b/ipgeo/leo.go
@@ -58,7 +58,7 @@ func receiveParse() {
 		m := make(map[string][]string)
 		err := json.Unmarshal([]byte(res.Get("router").String()), &m)
 		if err != nil {
-			return
+			// 此处是正常的，因为有些IP没有路由信息
 		}
 
 		lat, _ := strconv.ParseFloat(res.Get("lat").String(), 32)
diff --git a/util/latency.go b/util/latency.go
index c54e483..21fd061 100644
--- a/util/latency.go
+++ b/util/latency.go
@@ -14,8 +14,12 @@ var (
 	result  string
 	results = make(chan string)
 )
+var FastIpCache = ""
 
 func GetFastIP(domain string, port string, enableOutput bool) string {
+	if FastIpCache != "" {
+		return FastIpCache
+	}
 
 	ips, err := net.LookupIP(domain)
 	if err != nil {
@@ -44,7 +48,7 @@ func GetFastIP(domain string, port string, enableOutput bool) string {
 			)
 		}
 	}
-
+	FastIpCache = res[0]
 	return res[0]
 }
 
diff --git a/util/util.go b/util/util.go
index b82be37..dbb7cc5 100644
--- a/util/util.go
+++ b/util/util.go
@@ -13,6 +13,7 @@ import (
 	"github.com/fatih/color"
 )
 
+var Uninterrupted = GetenvDefault("NEXTTRACE_UNINTERRUPTED", "")
 var EnvToken = GetenvDefault("NEXTTRACE_TOKEN", "")
 var UserAgent = fmt.Sprintf("NextTrace %s/%s/%s", config.Version, runtime.GOOS, runtime.GOARCH)