diff --git a/src/helper/log.go b/src/helper/log.go
index 3e57c3c..5031ea7 100644
--- a/src/helper/log.go
+++ b/src/helper/log.go
@@ -1,6 +1,12 @@
 package helper
 
-import "log"
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"time"
+)
 
 type Log struct {
 }
@@ -17,3 +23,46 @@ func GetInstanceLog() *Log {
 func (l *Log) Out(args ...interface{}) {
 	log.Println(args)
 }
+
+func StartLogToFile(dir string) {
+	log.SetOutput(newLogWriter(dir))
+}
+
+type logWriter struct {
+	path string
+}
+
+func newLogWriter(path string) *logWriter {
+	_, notok := os.Stat(path)
+	if notok != nil {
+		err := os.MkdirAll(path, os.ModeDir)
+		if err != nil {
+			println(err.Error())
+		}
+	}
+
+	return &logWriter{
+		path: path,
+	}
+}
+
+func (that *logWriter) Write(p []byte) (n int, err error) {
+	fmt.Print(string(p))
+	that.WriteFile(fmt.Sprintf(that.path+"/%s.log", time.Now().Format("2006_01_02_15")), p, 0644)
+	return len(p), nil
+}
+
+func (that *logWriter) WriteFile(filename string, bytes []byte, perm os.FileMode) {
+	f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, perm)
+	if err != nil {
+		return
+	}
+	n, err := f.Write(bytes)
+	if err == nil && n < len(bytes) {
+		err = io.ErrShortWrite
+	}
+	if err1 := f.Close(); err == nil {
+		err = err1
+	}
+	return
+}