diff --git a/cmd/cmd.go b/cmd/cmd.go
index 3062c04..09308a6 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -3,10 +3,12 @@ package main
 import (
 	"fmt"
 	"log"
+	"math/rand"
 	"net/url"
 	"os"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/nanlei2000/douyin_download/pkg/douyin"
 	"github.com/urfave/cli/v2"
@@ -86,6 +88,9 @@ func main() {
 							<-c
 						}()
 
+						ran := rand.Int31n(100)
+						time.Sleep(time.Duration(ran) * time.Millisecond)
+
 						video, err := dy.Get(douyin.Source{
 							Type:    douyin.SourceType_VideoID,
 							Content: id,
diff --git a/pkg/douyin/post.go b/pkg/douyin/post.go
index dc655dc..00376fd 100644
--- a/pkg/douyin/post.go
+++ b/pkg/douyin/post.go
@@ -38,6 +38,8 @@ func (d *DouYin) GetAllVideoIDList(secUid string) ([]string, error) {
 		}
 		defer resp.Body.Close()
 
+		d.printf("resp status: %s", resp.Status)
+
 		body, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
 			log.Printf("fail to read body, secUid: %s, err: %s", secUid, err)
diff --git a/pkg/douyin/post_test.go b/pkg/douyin/post_test.go
index 7fbd902..83767ff 100644
--- a/pkg/douyin/post_test.go
+++ b/pkg/douyin/post_test.go
@@ -6,7 +6,9 @@ import (
 )
 
 func TestGetAllVideoIDList(t *testing.T) {
-	dy := DouYin{}
+	dy := NewDouYin()
+	dy.isDebug = true
+
 	list, err := dy.GetAllVideoIDList("MS4wLjABAAAAF0HqDm-8U9TiT_9AfqqPGiNbrP0c93AdB3_oRG7Em_Q")
 
 	if err != nil {
diff --git a/pkg/douyin/video.go b/pkg/douyin/video.go
index 90ec38c..21ab2fc 100644
--- a/pkg/douyin/video.go
+++ b/pkg/douyin/video.go
@@ -78,14 +78,14 @@ func (v *Video) Download(filename string) (string, error) {
 	dir := filepath.Dir(filename)
 
 	if _, err := os.Stat(dir); os.IsNotExist(err) {
-		if err := os.MkdirAll(dir, 0655); err != nil {
+		if err := os.MkdirAll(dir, os.ModePerm); err != nil {
 			return "", err
 		}
 	}
 	//如果是图片类，则将图片下载到指定目录
 	if v.VideoType == ImagePlayType {
 		imagePath := filepath.Join(dir, v.VideoId)
-		if err := os.MkdirAll(imagePath, 0655); err != nil {
+		if err := os.MkdirAll(imagePath, os.ModePerm); err != nil {
 			log.Printf("创建目录失败 [path=%s]", imagePath)
 		}
 		for _, image := range v.Images {
@@ -122,7 +122,7 @@ func (v *Video) Download(filename string) (string, error) {
 				continue
 			}
 			_ = resp.Body.Close()
-			err = ioutil.WriteFile(imageName, b, 0655)
+			err = ioutil.WriteFile(imageName, b, os.ModePerm)
 			if err != nil {
 				log.Printf("保存图像出错 -> [play_id=%s] [image_url=%s]", v.PlayId, image.ImageUrl)
 				continue