Disclosed are a user terminal device and a control method therefor. The user terminal device according to the present invention comprises: a communication unit for communicating with a peripheral device; an audio output unit for outputting audios; and a control unit for controlling the communication unit to transmit, to the peripheral device, the audio of a second application corresponding to an event if the event occurs while the audio of a first application is output via the audio output unit. Accordingly, the user terminal device can output the audios of multiple applications by using the speaker of the user terminal device and at least one of peripheral devices.