diff --git a/src/main.cpp b/src/main.cpp
index c834b96..049e23f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -57,7 +57,7 @@ int main(int argc, char *argv[])
     // QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
 
     QApplication a(argc, argv);
-
+    QApplication::setWindowIcon(QIcon(":/resources/128*128/spark-update-tool.png"));
     if (!isRoot()) {
         qDebug() << "Not running as root. Attempting to elevate...";
         if (!elevateToRoot()) {
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index a94fedd..e54ce43 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -13,7 +13,7 @@ MainWindow::MainWindow(QWidget *parent)
     , m_model(new AppListModel(this))
     , m_delegate(new AppDelegate(this))
 {
-    QIcon icon(":/resources/spark-update-tool.svg");
+    QIcon icon(":/resources/128*128/spark-update-tool.png");
     setWindowIcon(icon);
     QProgressDialog *progressDialog = new QProgressDialog("正在与服务器通信，获取更新信息中...", QString(), 0, 0, this);
     progressDialog->setWindowModality(Qt::ApplicationModal);
@@ -29,7 +29,7 @@ MainWindow::MainWindow(QWidget *parent)
         progressDialog->deleteLater();
         watcher->deleteLater();
         ui->setupUi(this);
-        QIcon icon(":/resources/spark-update-tool.svg");
+        QIcon icon(":/resources/128*128/spark-update-tool.png");
         setWindowIcon(icon);
         // 创建 QListView 并设置父控件为 ui->appWidget
         listView = new QListView(ui->appWidget);