The laser cleaning technology refers to the use of high-energy laser beam to illuminate the surface of the workpiece so as to make the surface dirt, rust spot or coating evaporate or peel off instantly,high-speed effectively remove attachments to or clean the surface of the object surface coating,to achieve a clean process.It is a new technology based on the interaction effect of laser and material, which is different from traditional mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method.It does not require any ozone - destroying CFC organic solvents,pollution-free, noiseless, harmless to the human body and environment, is a "green" cleaning technology.