An embodiment of the invention discloses a software upgrading processing method and device as well as a terminal. The software upgrading processing method comprises the following steps: current application version number of a played application and a protocol version number corresponding to each audio device in an audio device group are acquired, wherein the protocol version number is the lowest application version number of the played application compatible with sound intermediate frequency firmware in each audio device; then the protocol version number is compared with the current application version number, a comparison result is obtained, whether an audio device compatible with the played application exists is judged according to the comparison result, and if the audio device exists, software upgrading processing operation targeted at the compatible audio device is executed. According to the scheme, whether each audio device needs upgrading is determined by the terminal, times of communication with the audio device are reduced, and the logical processing difficulty in software upgrading is reduced.