diff --git a/README.zh.md b/README.zh.md
index 173399b..1be7343 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -23,12 +23,19 @@
 #### 编译安装
 
 
-Deepin V20/UOS 21/ Ubuntu 22.04 系统下, 安装依赖
+Deepin V20/UOS 21 系统下, 安装依赖
 
 ```shell
 sudo apt install git qt5-default debhelper pkg-config qtchooser libqt5core5a libqt5gui5 libqt5widgets5 libqt5network5 libqt5concurrent5 libdtkcore-dev libdtkgui-dev  libdtkwidget-dev qttools5-private-dev libnotify-dev qtwebengine5-dev
 
 ```
+
+Ubuntu 22.04 系统下, 安装依赖
+```shell
+sudo apt install git qtbase5-dev debhelper pkg-config qtchooser libqt5core5a libqt5gui5 libqt5widgets5 libqt5network5 libqt5concurrent5 libdtkcore-dev libdtkgui-dev  libdtkwidget-dev qttools5-private-dev libnotify-dev qtwebengine5-dev
+
+```
+
 然后
 ```shell
 git clone https://gitee.com/deepin-community-store/spark-store.git
diff --git a/src/downloadworker.cpp b/src/downloadworker.cpp
index 22ca16f..08a2541 100644
--- a/src/downloadworker.cpp
+++ b/src/downloadworker.cpp
@@ -106,13 +106,19 @@ DownloadController::DownloadController(QObject *parent)
         for (int i = 0; i < list.size(); i++) {
             if (list.at(i).contains("镜像源 Download only") && i + 1 < list.size()) {
                 for (int j = i + 1; j < list.size(); j++) {
-                    domains.append(list.at(j));
+                    system("curl -I -s --connect-timeout 5 " + list.at(j).toUtf8() 
+                        + "/dcs-repo.gpg-key.asc -w  %{http_code}  |tail -n1 > /tmp/spark-store/cdnStatus.txt");
+                    QFile cdnStatus("/tmp/spark-store/cdnStatus.txt");
+                    if(cdnStatus.open(QFile::ReadOnly) && QString(cdnStatus.readAll()).toUtf8()=="200"){
+                        qDebug() << list.at(j);
+                        domains.append(list.at(j));
+                    }   
                 }
                 break;
             }
         }
     }
-    qDebug() << domains.size();
+    qDebug() << domains << domains.size();
 
     /*
     domains = {
diff --git a/src/widget.cpp b/src/widget.cpp
index 88300f4..02d866e 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -46,7 +46,12 @@ Widget::Widget(DBlurEffectWidget *parent) :
     manager = new QNetworkAccessManager(this);  // 下载管理
 
     httpClient = new AeaQt::HttpClient;
-    downloadController = new DownloadController(this);  // 并发下载
+    
+    QtConcurrent::run([=]()
+    {
+        downloadController = new DownloadController(this);  // 并发下载
+    });
+    
 
     connect(ui->menu_main, &QPushButton::clicked, this, [=](){Widget::chooseLeftMenu(0);});
     connect(ui->menu_network, &QPushButton::clicked, this, [=](){Widget::chooseLeftMenu(1);});