diff --git a/mainwindow.cpp b/mainwindow.cpp
index 05ef24b..0b3d2aa 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -198,3 +198,8 @@ void MainWindow::setCurrentSlider(int currentProgress)
     // 设置时间滑动条状态
     ui->time_slider->setValue(currentProgress);
 }
+
+void MainWindow::on_play_btn_clicked()
+{
+    ui->play_btn->setIcon(QIcon(":/icon/button"));
+}
diff --git a/mainwindow.h b/mainwindow.h
index 6f746fc..f035963 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -51,6 +51,9 @@ signals:
     void currentTimeSignal(int time); // 当前时间信号
     void currentProgressSignal(int currentProgress); // 当前进度信号
 
+private slots:
+    void on_play_btn_clicked();
+
 private:
     Ui::MainWindow *ui;
 };