AUDIO DEVICE POWER SUPPLY SYSTEM

A power system for audio device comprises a mobile terminal and an audio device, wherein the mobile terminal including a first control unit, a battery, a first energy management unit configured to power the mobile terminal, a first power switch and a first port; the audio device including a second control unit, a second energy management unit configured to power the audio device, a second power switch, a second port matching with the first port and a third port; energy provided by an external power supply transmitting to the second power switch, the second port, the first port and the first energy management unit via the third port; the third port being connected to the second energy management unit and configured to transmit energy to the second energy management unit. The present invention ensures that if low battery level is being detected, the external power supply connected could supply energy, so as to avoid the interruption due to low power level and ensure the operation of the audio device, thereby improving the user experience and the product competitiveness and facilitating the promotion.