An apparatus and method for notifying the state of a self-moving robot using voice or a variety of melodies is provided. The self-moving state notification apparatus includes a voice notification unit for outputting an audio signal notifying the operating state of the self-moving robot. The apparatus outputs voice or various melodies corresponding to states or errors of the self-moving robot while in operation, so that the user can be quickly and clearly notified of the state of the cleaning robot and thus can quickly take any necessary measures for the state, thereby ensuring that the cleaning robot operates reliably.