This APP can realize the opening and closing of the anti-theft function of the motorcycle by scanning the Bluetooth sound of the motorcycle and automatically connecting. When the anti-theft is on, the Bluetooth audio system can be switched on and off, up and down music, play pause music, adjust volume and switch modes. In radio mode, listen to the radio; in U-disk and SD card mode, play the music of U-disk and SD card; in BT mode, play the music of mobile phone.