A control method for a wireless Bluetooth (BT) audio output system includes: establishing an active link between a main BT controller to a first BT smart device among a plurality of BT smart devices; establishing an inactive link between an extra BT controller to a second BT smart device among the plurality of BT smart devices; and playing, by means of an audio output element, media data transmitted from the first BT smart device via the active link under control of the primary BT controller.