An artificial intelligence device for controlling an external device includes a display unit, and a processor configured to acquire a distance between the artificial intelligence device and a first external device, determine whether the acquired distance is less than a reference distance, display a first operation menu item for controlling the first external device on the display unit when the acquired distance is less than the reference distance, acquire situation information when the acquired distance is equal to or greater than the reference distance, determine a second external device as an object to be controlled based on the acquired situation information, and display a second operation menu item for controlling the determined second external device on the display unit.