diff --git a/download.go b/download.go
index bf7af14..eb07902 100644
--- a/download.go
+++ b/download.go
@@ -182,6 +182,16 @@ func (this *downloadEnv) RunDownload(req RunDownload_Req) (resp RunDownload_Resp
 			return resp
 		}
 	}
+
+	downloadingFilePath := filepath.Join(downloadDir, "downloading.txt")
+	if !isFileExists(downloadingFilePath) {
+		err = ioutil.WriteFile(downloadingFilePath, []byte(req.M3u8Url), 0666)
+		if err != nil {
+			resp.ErrMsg = "os.WriteUrl error: " + err.Error()
+			return resp
+		}
+	}
+
 	beginSeq := parseBeginSeq(m3u8Body)
 	// 获取m3u8地址的内容体
 	encInfo, err := this.getEncryptInfo(req.M3u8Url, string(m3u8Body))
diff --git a/m3u8d-qt/mainwindow.cpp b/m3u8d-qt/mainwindow.cpp
index 3b32737..a10eda8 100644
--- a/m3u8d-qt/mainwindow.cpp
+++ b/m3u8d-qt/mainwindow.cpp
@@ -20,12 +20,9 @@ MainWindow::MainWindow(QWidget *parent) :
     ui->lineEdit_SkipTsCountFromHead->setPlaceholderText("[0,9999]");
     ui->lineEdit_SaveDir->setPlaceholderText(QString::fromStdString(GetWd()));
     m_syncUi.AddRunFnOn_OtherThread([this](){
-        while(true)
+        while(!this->m_syncUi.Get_Done())
         {
             QThread::msleep(50);
-            if (this->m_syncUi.Get_Done()) {
-                break;
-            }
             m_syncUi.AddRunFnOn_UiThread([this](){
                 GetProgress_Resp resp = GetProgress();
                 ui->progressBar->setValue(resp.Percent);