This project is a solar wall-climbing robot with three-cavity adsorption. The design of the robot is based on the principle of negative pressure adsorption. The three-cavity exhaust composed of three brushless motors forms negative pressure, so that the machine can move freely on the glass wall. The mobile module adopts a crawler-type car body, which is controlled by the ESP8266wifi module, and adopts sensors and cameras to transmit information in real time through the wife module. It also has an automatic control system, the position information of the current robot is read by the gyroscope, and then the gait of the robot is generated, and the robot travels automatically.