diff --git a/logger/logger.go b/logger/logger.go
index 869037a..3c47b5e 100644
--- a/logger/logger.go
+++ b/logger/logger.go
@@ -15,6 +15,7 @@ import (
 
 var stdlogger *log.Logger
 var UseLogFile = flagx.Bool("logfile", false, "")
+var logprefix = flagx.Int("logprefix", 3, "0 : no_prefix, 1 : date, 2 : time, 3 : datetime")
 
 func init() {
 	binpath, _ := os.Executable()
@@ -38,7 +39,11 @@ func init() {
 		outWriter = io.MultiWriter(outWriter, logFile)
 	}
 
-	stdlogger = log.New(outWriter, "", log.LstdFlags)
+	if *logprefix < 4 {
+		stdlogger = log.New(outWriter, "", *logprefix)
+	} else {
+		stdlogger = log.New(outWriter, "", log.LstdFlags)
+	}
 }
 
 func Println(v ...interface{}) {