he application of laser to material processing makes the manufacturing industry change radically and solve the difficult problem that many conventional methods can't solve. Laser finishing and laser micromachining not only promote the development of microelectronics industry, but also provide conditions for micro mechanical manufacturing. Transfer the traditional processing methods mostly force, so the processing speed is limited, while the laser processing is more light transmission, small inertia, high flexibility, high energy density and laser processing, laser processing speed can be very fast, known as "the processing method of common manufacturing system in the future".