Headset, terminal, and method capable of switching headset mode

A method capable of switching a headset mode, wherein one headset comprises a Bluetooth headset body, a headset plug, a microphone, and at least one speaker, wherein the Bluetooth headset body is configured to perform Bluetooth communication and transmit an audio signal, and it comprises a Bluetooth headset main-board and a battery supplying power to the Bluetooth headset main-board, and interfaces provided by the Bluetooth headset main-board comprise the interfaces for the microphone and the speaker, and

• anodes of the microphone and the at least one speaker are connected to the corresponding interfaces of the Bluetooth headset main-board, respectively, and their cathodes are connected to a ground cable, respectively;
• the method comprises:
• correspondingly and electrically connecting the interfaces of the headset plug and the anode of the at least one speaker, the ground cable, and the anode of the microphone, respectively;
• and
• after the headset plug is detected to be plugged in a headset jack, disconnecting connections between the anodes of the microphone and of the at least one speaker and the corresponding interfaces of the Bluetooth headset main-board, and switching an audio channel from a Bluetooth headset audio channel to a common headset audio channel which corresponds to the headset jack.