from PyQt5.Qt import * import sys app = QApplication(sys.argv) ui = QWidget() ui.resize(1920, 1080) palette = QPalette() pix=QPixmap("./qq.jpg") pix = pix.scaled(ui.width(),ui.height()) palette.setBrush(QPalette.Background,QBrush(pix)) ui.setPalette(palette) ui.show() if __name__ == '__main__': sys.exit(app.exec_())