Abstract: A cumulative dust on the surface of photovoltaic panels affects seriously the efficiency of power generation.To solve the problem of dust deposition on the surface of photovoltaic panels,an intelligent cleaning robot for photovoltaic panels is designed according to the mathematical model of dust deposition on the surface of photovoltaic panels and the installation specifications of photovoltaic power plants.The robot is driven by a DC deceleration motor and the drum-type brush is used as the cleaning brush.The structure of the robot is simple and reasonable.The rationality of the mechanical structure and control circuit of the cleaning robot is verified by the comparative experiment of photovoltaic power plant design that it can achieve self-cleaning while without causing damage to the surface of the photovoltaic plate.It can achieve cleaning coverage rate at 100%,overall cleanliness at more than 95%.What’ s more,the power generation in cleaning area is increased by about 20%.