An electronic apparatus includes a voice acquirer which receives a first voice, a voice processor which processes a voice signal, a communication unit which communicates with at least one external electronic apparatus and receives information on at least one second voice, and a controller which determines whether the first voice is a user's command based on the information on at least one second voice transmitted by the communication unit, and if the first voice is not the user's command, does not perform an operation according to the first voice.