Fiber laser cutting machine is a laser cutting machine that uses fiber laser as light source. Its excellent performance, high speed, high conversion rate and many other advantages are widely used in mechanical processing and machinery manufacturing industries. The working principle of fiber laser cutting machine is to use a high-energy-density laser beam to irradiate the surface of the workpiece, so that the area on the workpiece irradiated by the ultra-fine focal spot is instantly melted and vaporized, and the irradiation position of the spot is moved by the CNC mechanical system to achieve automatic cutting. This cutting method can be used for plane cutting and bevel cutting, and the edges are neat and smooth, which is suitable for high-precision cutting of metal plates and other materials.