An electronic device which can communicate with a plurality of artificial intelligence servers includes a voice receiving unit receiving a voice, a wireless communication unit communicating with a plurality of artificial intelligence servers set to be activated by mutually different starting words, and a controller generating a plurality of starting words set to be different respectively for the plurality of artificial intelligence servers in response to an input voice including a preset starting word, converting the voice t include the plurality of generated starting words and transmitting the converted voice to each of the plurality of artificial intelligence servers, and outputting a plurality of pieces of result information when the plurality of pieces of result information generated in response to the converted voice are received from the plurality of artificial intelligence servers.