The present disclosure relates to an earset and a control method therefor, the earset comprising: an earset main body including two ends which are configured to be detachable from and attachable to each other; a plurality of earphones for outputting sound signals; a sound output part including at least one speaker; a sensing part for sensing a change in detachment and attachment states of the two ends; and a control part which, depending on whether the detachment and attachment states of the two ends are changed, turns on or off a function which is executed in the earset or executes any one of the functions corresponding to an event sensed from the earset.