Disclosed is an AR device and method for controlling the same. According to the present disclosure, an augmented reality (AR) device comprises a frame supported by a user's head, a processor providing an AR image, a display connected with the frame and overlaying and displaying the AR image received from the processor on a real world, a marker generator generating a marker corresponding to an AR object, and a marker display displaying the marker generated by the marker generator. The AR device of the present disclosure may be associated with an artificial intelligence module, a robot, a virtual reality (VR) device, a device related to a 5G service, and the like.