Abstract: In order to make the cleaning robot can be applied to the most of the aircraft main wing,fuselage and tail cleaning,The STM32 single chip microcomputer is the core controller,which consists of negative pressure adsorption module,mechanical motion module,image transmission module,cleaning module,communication module,ultrasonic obstacle avoidance module and ground control terminal and so on.The system can be stably adsorbed and moved on the outside surface of the aircraft.It can control the terminal through the control of the surface of the aircraft to achieve the cleaning,detection work.