Laser welding machine is the use of high-energy laser pulses to local heating in small area of material, the energy of laser radiation by heat conduction to the material, the internal diffusion of the material after melting to form specific molten pool.It is a new kind of welding way, mainly for the welding of thin wall materials, precision parts, which can realize welding, butt welding, welding stack, seal welding, etc., deep than high, wide weld width is small, small heat affected zone, small deformation, welding speed, welding seam smooth, beautiful, without processing or simply processing after welding, high weld quality, no pores, can accurate control, focusing on small points of light, high positioning accuracy, easy to realize automation.