Provided are a method of associating an AI device with a device based on a behavior pattern of a user and a device therefor. The method of associating the AI device with the device according to an embodiment of the invention receives a preset behavior pattern of the user sensed by a first camera from the first camera, receives a voice command for controlling an operation of the device from the user, and transmits the voice command to the device, thus allowing devices having no AI function to be used in conjunction with the AI device. The AI device and the dive of the invention may be associated with artificial intelligence modules, drones (unmanned aerial vehicles (UAVs)), robots, augmented reality (AR) devices, virtual reality (VR) devices, devices related to 5G service, etc.