An augmented reality-based device control method and a control apparatus thereof are disclosed. The augmented reality-based device control method includes obtaining a real image with a device to be controlled as a subject, as an image which configures an augmented reality (AR)-based remote controller and detecting a remote control (RC) protocol of the device to be controlled by recognizing the real image. The detecting of an RC protocol of the device to be controlled includes verifying whether the device to be controlled is controllable through a candidate RC protocol based on whether the device to be controlled operates according to the real image. According to the present disclosure, the device can be controlled based on the augmented reality using artificial intelligence (AI)-based image recognition through a 5G network.