An intelligent inspection device is disclosed. The intelligent inspection device includes a camera configured to photograph a refrigerator that is installed and a processor configured to position a first refrigerator image photographed by the camera in a preset area of an inspection frame, compare the first refrigerator image with the inspection frame, inspect whether a step is present in the refrigerator based on a result of the comparison, and learn a solution corresponding to a result of the inspection to provide the solution to a user. The intelligent inspection device may be associated with an artificial intelligence module, an unmanned aerial vehicle (UAV), a robot, an augmented reality (AR) device, a virtual reality (VR) device, devices related to 5G services, and the like.