Telephone and audio controlling method thereof

A telephone and an audio controlling method thereof are provided. The telephone includes a connector, a detecting circuit and an audio controlling unit. The connector connects an audio transceiver. The detecting circuit couples the connector, and generates a detecting voltage by detecting the audio transceiver through the connector. The audio controlling unit couples the detecting circuit and the connector. The audio controlling unit includes an analog-to-digital converter, an audio codec and a processing unit. The analog-to-digital converter is configured to covert the detecting voltage to a digital code. The audio codec provides at least two audio configurations. The processing unit identifies the audio transceiver according to the digital code, and controls the audio codec to switch to the audio configuration adapted to the identified audio transceiver to process audio data of the audio transceiver.