diff --git a/common/log/log.go b/common/log/log.go
deleted file mode 100644
index d094a48..0000000
--- a/common/log/log.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package log
-
-import (
-	"net"
-	"strconv"
-
-	"github.com/xjasonlyu/tun2socks/common/lsof"
-)
-
-var logger Logger
-
-func RegisterLogger(l Logger) {
-	logger = l
-}
-
-func SetLevel(level Level) {
-	if logger != nil {
-		logger.SetLevel(level)
-	}
-}
-
-func Debugf(msg string, args ...interface{}) {
-	if logger != nil {
-		logger.Debugf(msg, args...)
-	}
-}
-
-func Infof(msg string, args ...interface{}) {
-	if logger != nil {
-		logger.Infof(msg, args...)
-	}
-}
-
-func Warnf(msg string, args ...interface{}) {
-	if logger != nil {
-		logger.Warnf(msg, args...)
-	}
-}
-
-func Errorf(msg string, args ...interface{}) {
-	if logger != nil {
-		logger.Errorf(msg, args...)
-	}
-}
-
-func Fatalf(msg string, args ...interface{}) {
-	if logger != nil {
-		logger.Fatalf(msg, args...)
-	}
-}
-
-func Access(process, outbound, network, localAddr, target string) {
-	var err error
-	if process == "" {
-		localHost, localPortStr, _ := net.SplitHostPort(localAddr)
-		localPortInt, _ := strconv.Atoi(localPortStr)
-		process, err = lsof.GetCommandNameBySocket(network, localHost, uint16(localPortInt))
-		if err != nil {
-			process = "unknown process"
-		}
-	}
-	Infof("[%v] [%v] [%v] %s", outbound, network, process, target)
-}
diff --git a/common/log/logger.go b/common/log/logger.go
deleted file mode 100644
index c3f971e..0000000
--- a/common/log/logger.go
+++ /dev/null
@@ -1,20 +0,0 @@
-package log
-
-type Level uint8
-
-const (
-	DEBUG Level = iota
-	INFO
-	WARNING
-	ERROR
-	SILENT
-)
-
-type Logger interface {
-	SetLevel(level Level)
-	Debugf(msg string, args ...interface{})
-	Infof(msg string, args ...interface{})
-	Warnf(msg string, args ...interface{})
-	Errorf(msg string, args ...interface{})
-	Fatalf(msg string, args ...interface{})
-}
diff --git a/common/log/simple/logger.go b/common/log/simple/logger.go
deleted file mode 100644
index c8137cc..0000000
--- a/common/log/simple/logger.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package simple
-
-import (
-	goLog "log"
-
-	"github.com/xjasonlyu/tun2socks/common/log"
-)
-
-func init() {
-	log.RegisterLogger(NewSimpleLogger())
-}
-
-type simpleLogger struct {
-	level log.Level
-}
-
-func NewSimpleLogger() log.Logger {
-	return &simpleLogger{log.INFO}
-}
-
-func (l *simpleLogger) SetLevel(level log.Level) {
-	l.level = level
-}
-
-func (l *simpleLogger) Debugf(msg string, args ...interface{}) {
-	if l.level <= log.DEBUG {
-		l.output(msg, args...)
-	}
-}
-
-func (l *simpleLogger) Infof(msg string, args ...interface{}) {
-	if l.level <= log.INFO {
-		l.output(msg, args...)
-	}
-}
-
-func (l *simpleLogger) Warnf(msg string, args ...interface{}) {
-	if l.level <= log.WARNING {
-		l.output(msg, args...)
-	}
-}
-
-func (l *simpleLogger) Errorf(msg string, args ...interface{}) {
-	if l.level <= log.ERROR {
-		l.output(msg, args...)
-	}
-}
-
-func (l *simpleLogger) Fatalf(msg string, args ...interface{}) {
-	goLog.Fatalf(msg, args...)
-}
-
-func (l *simpleLogger) output(msg string, args ...interface{}) {
-	goLog.Printf(msg, args...)
-}
diff --git a/log/level.go b/log/level.go
new file mode 100644
index 0000000..cb80f49
--- /dev/null
+++ b/log/level.go
@@ -0,0 +1,28 @@
+package log
+
+const (
+	DEBUG Level = iota
+	INFO
+	WARNING
+	ERROR
+	SILENT
+)
+
+type Level int
+
+func (l Level) String() string {
+	switch l {
+	case INFO:
+		return "info"
+	case WARNING:
+		return "warning"
+	case ERROR:
+		return "error"
+	case DEBUG:
+		return "debug"
+	case SILENT:
+		return "silent"
+	default:
+		return "unknown"
+	}
+}
diff --git a/log/log.go b/log/log.go
new file mode 100644
index 0000000..4cf03cf
--- /dev/null
+++ b/log/log.go
@@ -0,0 +1,78 @@
+package log
+
+import (
+	"fmt"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+)
+
+var (
+	level = INFO
+)
+
+func init() {
+	log.SetOutput(os.Stdout)
+	log.SetLevel(log.DebugLevel)
+}
+
+type Event struct {
+	LogLevel Level
+	Payload  string
+}
+
+func (e *Event) Type() string {
+	return e.LogLevel.String()
+}
+
+func Infof(format string, v ...interface{}) {
+	event := newLog(INFO, format, v...)
+	printf(event)
+}
+
+func Warnf(format string, v ...interface{}) {
+	event := newLog(WARNING, format, v...)
+	printf(event)
+}
+
+func Errorf(format string, v ...interface{}) {
+	event := newLog(ERROR, format, v...)
+	printf(event)
+}
+
+func Debugf(format string, v ...interface{}) {
+	event := newLog(DEBUG, format, v...)
+	printf(event)
+}
+
+func Fatalf(format string, v ...interface{}) {
+	log.Fatalf(format, v...)
+}
+
+func SetLevel(newLevel Level) {
+	level = newLevel
+}
+
+func printf(data *Event) {
+	if data.LogLevel < level {
+		return
+	}
+
+	switch data.LogLevel {
+	case INFO:
+		log.Infoln(data.Payload)
+	case WARNING:
+		log.Warnln(data.Payload)
+	case ERROR:
+		log.Errorln(data.Payload)
+	case DEBUG:
+		log.Debugln(data.Payload)
+	}
+}
+
+func newLog(logLevel Level, format string, v ...interface{}) *Event {
+	return &Event{
+		LogLevel: logLevel,
+		Payload:  fmt.Sprintf(format, v...),
+	}
+}