An electronic apparatus which registers a device to a server by using a voice, and a method therefor are provided. The electronic apparatus includes a communication circuit, a microphone, a memory for storing computer executable instructions, and at least one processor configured to execute the computer executable instructions to acquire, from a voice received through the microphone, information on an external device which a user wishes to register, based on an external device corresponding to the acquired information being searched through the communication circuit, control the communication circuit to transmit information on an access point to the external device to enable the external device to communicate with a server, and control the communication circuit to transmit a registration request with respect to the external device to the server.