diff --git a/cmd/upx/upx.go b/cmd/upx/upx.go
index c7c5760..07388fb 100644
--- a/cmd/upx/upx.go
+++ b/cmd/upx/upx.go
@@ -8,7 +8,9 @@ import (
 )
 
 func main() {
-	processbar.EnableProgressbar()
+	if upx.IsVerbose {
+		processbar.EnableProgressbar()
+		defer processbar.WaitProgressbar()
+	}
 	upx.CreateUpxApp().Run(os.Args)
-	processbar.WaitProgressbar()
 }
diff --git a/io.go b/io.go
index 2c71916..7cc2c30 100644
--- a/io.go
+++ b/io.go
@@ -11,7 +11,7 @@ import (
 )
 
 var (
-	isVerbose = true
+	IsVerbose = true
 	mu        = &sync.Mutex{}
 )
 
@@ -58,7 +58,7 @@ func Print(arg0 string, args ...interface{}) {
 }
 
 func PrintOnlyVerbose(arg0 string, args ...interface{}) {
-	if isVerbose {
+	if IsVerbose {
 		Print(arg0, args...)
 	}
 }
diff --git a/processbar/bar.go b/processbar/bar.go
index cb83bf1..fcc60a6 100644
--- a/processbar/bar.go
+++ b/processbar/bar.go
@@ -29,15 +29,22 @@ func (p *UpxProcessBar) StartBar() {
 	if !enableBar {
 		return
 	}
-	wg.Add(1)
+
+	p.bar.Set("speed", 0)
 	p.bar.Start()
+	wg.Add(1)
+
+	// 避免小文件传输过快导致最后计算速度异常, 此处进行短暂睡眠
+	time.Sleep(time.Millisecond * 100)
 }
 
 func (p *UpxProcessBar) Finish() {
 	if !enableBar {
 		return
 	}
-	p.bar.Finish()
+	if !p.bar.IsFinished() {
+		p.bar.Finish()
+	}
 	wg.Done()
 }
 
@@ -49,12 +56,12 @@ func (p *UpxProcessBar) NewProxyReader(r io.Reader) io.ReadCloser {
 	return p.bar.NewProxyReader(r)
 }
 
-func NewProcessBar(filename string, current, limit int64) *UpxProcessBar {
+func NewProcessBar(filename string, limit int64) *UpxProcessBar {
 	bar := pb.Full.New(int(limit))
 	bar.SetTemplateString(
-		`{{ with string . "filename" }}{{.}}  {{end}}{{ percent . }} {{ bar . "[" ("=" | green) (cycle . "=>" | green ) "-" "]" }} ({{counters .}}, {{speed . "%s/s"}})`,
+		`{{ with string . "filename" }}{{.}}  {{end}}{{ percent . }} {{ bar . "[" ("=" | green) (cycle . "=>" | green ) "-" "]" }} ({{counters . }}, {{speed . "%s/s" "100"}})`,
 	)
-	bar.SetRefreshRate(time.Millisecond * 125)
+	bar.SetRefreshRate(time.Millisecond * 20)
 	bar.Set("filename", leftAlign(shortPath(filename, 30), 30))
 	return &UpxProcessBar{bar}
 }
diff --git a/session.go b/session.go
index adac5e3..1fb67ce 100644
--- a/session.go
+++ b/session.go
@@ -353,7 +353,7 @@ func (sess *Session) getFileWithProgress(upPath, localPath string, upInfo *upyun
 
 	var bar *processbar.UpxProcessBar
 	if upInfo.Size > 0 {
-		bar = processbar.NewProcessBar(localPath, 0, upInfo.Size)
+		bar = processbar.NewProcessBar(localPath, upInfo.Size)
 	}
 
 	dir := filepath.Dir(localPath)
@@ -507,9 +507,9 @@ func (sess *Session) putFileWithProgress(localPath, upPath string, localInfo os.
 	}
 
 	var bar *processbar.UpxProcessBar
-	if isVerbose {
+	if IsVerbose {
 		if localInfo.Size() > 0 {
-			bar = processbar.NewProcessBar(upPath, 0, localInfo.Size())
+			bar = processbar.NewProcessBar(upPath, localInfo.Size())
 			cfg.Reader = NewFileWrappedReader(bar, fd)
 		}
 	} else {
@@ -521,9 +521,11 @@ func (sess *Session) putFileWithProgress(localPath, upPath string, localInfo os.
 		}
 	}
 	err = sess.updriver.Put(cfg)
-	bar.Finish()
+	if bar != nil {
+		bar.Finish()
+	}
 
-	if !isVerbose {
+	if !IsVerbose {
 		log.Printf("file: %s, Done\n", upPath)
 	}
 	return err
@@ -556,7 +558,7 @@ func (sess *Session) putRemoteFileWithProgress(rawURL, upPath string) error {
 	}
 
 	// 创建进度条
-	bar := processbar.NewProcessBar(upPath, 0, size)
+	bar := processbar.NewProcessBar(upPath, size)
 
 	// 上传文件
 	err = sess.updriver.Put(&upyun.PutObjectConfig{
diff --git a/upx.go b/upx.go
index 61812b2..a792347 100644
--- a/upx.go
+++ b/upx.go
@@ -26,7 +26,7 @@ func CreateUpxApp() *cli.App {
 	}
 	app.Before = func(c *cli.Context) error {
 		if c.Bool("q") {
-			isVerbose = false
+			IsVerbose = false
 		}
 		if c.String("auth") != "" {
 			err := authStrToConfig(c.String("auth"))