For the problems of complex operation and unclear vision in harsh work environment, proposes a design scheme of wireless small intelligent robot based on monocular vision. Uses a hand-held remote controller based on 2.4 GHz spectrum to control the small intelligent robot moving, the robot acquires environmental images with camera and transmits the images real-time to the phone APP for displaying by WiFi technology. In addition, the robot also has the function of avoiding obstacle and anti falling off cliff. The physical model working results show that the monocular vision solution is feasible and effective.