diff --git a/conf/wide.go b/conf/wide.go
index 8ec9492..ada4a6d 100644
--- a/conf/wide.go
+++ b/conf/wide.go
@@ -253,7 +253,8 @@ func Save() bool {
 }
 
 // Load loads the configurations from wide.json.
-func Load(confPath, confIP, confPort, confServer, confStaticServer, confContext, confChannel string, confDocker bool) {
+func Load(confPath, confIP, confPort, confServer, confLogLevel, confStaticServer, confContext, confChannel string,
+	confDocker bool) {
 	bytes, _ := ioutil.ReadFile(confPath)
 
 	err := json.Unmarshal(bytes, &Wide)
@@ -304,6 +305,11 @@ func Load(confPath, confIP, confPort, confServer, confStaticServer, confContext,
 		Wide.Server = confServer
 	}
 
+	// Logging Level
+	if "" != confLogLevel {
+		Wide.LogLevel = confLogLevel
+	}
+
 	// Static Server
 	Wide.StaticServer = strings.Replace(Wide.StaticServer, "{IP}", Wide.IP, 1)
 	if "" != confStaticServer {
diff --git a/main.go b/main.go
index d4fc24f..d5d40f3 100644
--- a/main.go
+++ b/main.go
@@ -50,12 +50,12 @@ func init() {
 	confIP := flag.String("ip", "", "ip to visit")
 	confPort := flag.String("port", "", "port to visit")
 	confServer := flag.String("server", "", "this will overwrite Wide.Server if specified")
+	confLogLevel := flag.String("log_level", "info", "logging level: debug/info/warn/error")
 	confStaticServer := flag.String("static_server", "", "this will overwrite Wide.StaticServer if specified")
 	confContext := flag.String("context", "", "this will overwrite Wide.Context if specified")
 	confChannel := flag.String("channel", "", "this will overwrite Wide.XXXChannel if specified")
 	confStat := flag.Bool("stat", false, "whether report statistics periodically")
 	confDocker := flag.Bool("docker", false, "whether run in a docker container")
-	//     confLogLevel := flag.String("log_level", "info", "logging level: debug/info/warn/error")
 
 	flag.Parse()
 
@@ -73,7 +73,8 @@ func init() {
 
 	event.Load()
 
-	conf.Load(*confPath, *confIP, *confPort, *confServer, *confStaticServer, *confContext, *confChannel, *confDocker)
+	conf.Load(*confPath, *confIP, *confPort, *confServer, *confLogLevel, *confStaticServer, *confContext, *confChannel,
+		*confDocker)
 
 	conf.FixedTimeCheckEnv()
 	conf.FixedTimeSave()