diff --git a/config/config.go b/config/config.go
index 882b2380..736e16d8 100644
--- a/config/config.go
+++ b/config/config.go
@@ -208,10 +208,6 @@ func (c *ConfigType) GetHostIP() string {
 }
 func (c *ConfigType) GetHostSN() string {
 	ret := HostInfo.GetSN()
-	if ret == "" {
-		return c.GetHostname()
-	}
-
 	return ret
 }
 func GetEnv(key string) string {
diff --git a/config/hostname.go b/config/hostname.go
index f9a151c9..bc5635c5 100644
--- a/config/hostname.go
+++ b/config/hostname.go
@@ -83,10 +83,8 @@ func InitHostInfo() error {
 		ip = fmt.Sprint(nip)
 	}
 	var sn string
-	sn, err = GetBiosSn()
-	if err != nil {
-		return err
-	}
+	// allow sn empty
+	sn, _ = GetBiosSn()
 	HostInfo = &HostInfoCache{
 		name: hostname,
 		ip:   fmt.Sprint(ip),