diff --git a/main.go b/main.go
index a5d7488..353815a 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"flag"
 	"log"
 	"time"
 
@@ -21,6 +22,18 @@ type CountLiveAnchors struct {
 	CountMap  string    `xorm:"count_map"`
 }
 
+func getArgsStartTime() time.Time {
+	date := flag.Arg(0)
+	if date != "" {
+		panic("please input date eg. '2020-11-30 16:29:17'")
+	}
+	start, err := time.ParseInLocation("2006-01-02 15:04:03", date, time.Local)
+	if err != nil {
+		panic(err)
+	}
+	return start
+}
+
 func main() {
 	mdb := database.NewStatisticsDB("mongodb://sg-board1.livenono.com:27018")
 
@@ -31,7 +44,8 @@ func main() {
 
 	cla := engine.Table("count_live_anchors")
 
-	start, err := time.ParseInLocation("2006-01-02 15:04:03", "2020-11-30 16:29:17", time.Local)
+	start := getArgsStartTime()
+	// start, err := time.ParseInLocation("2006-01-02 15:04:03", "2020-11-30 16:29:17", time.Local)
 	if err != nil {
 		panic(err)
 	}