A voice recognition apparatus includes a communication part configured to communicate with a voice recognition server, a voice receiver configured to receive a user's voice signal, a storage part configured to store guide information comprising at least an example command for voice recognition; and a controller. The controller is configured to generate a guide image comprising at least a part of the example command, transmit the received user's voice signal to the voice recognition server through the communication part in response to receiving the user's voice signal by the voice receiver, and update the stored guide information based on update information received through the communication part.