The invention discloses a Bluetooth system which comprises a Bluetooth module, a mobile multi-media module and a base band module, wherein the Bluetooth module comprises a pulse code modulation audio interface and an universal asynchronous transceiving interface; the mobile multi-media module is connected with the Bluetooth module by the pulse code modulation audio interface and the universal asynchronous transceiving interface, and further comprises a bus interface and an audio interface; and the base band module is connected with the mobile multi-media module by the bus interface and the audio interface. Compared with the prior art, the base band module is not directly connected with the Bluetooth module, and has data interaction with the Bluetooth module by means of the mobile multi-media module, so that an analog switch in the prior art is omitted, and the hardware cost of a chip is reduced. In addition, Bluetooth protocol is not needed to be arranged in the base band module and is completely positioned in the mobile multi-media module, so that the software complexity is reduced.