Sheet Metal Processing is the main component of metal processing in industrial production activities, and it is also an important process for forming sheet metal products. Its application field is very wide. The sheet metal processing industry has always been closely related to our lives and appears in almost all walks of life. Sheet metal cutting is a step in sheet metal processing, which cuts the whole sheet into various plates that need to be formed. Among them, laser cutting technology has flourished in recent years and is widely recognized by users. For the cutting of sheet metal, the effective cutting range of laser is very wide, from micron level to tens of millimeters thick plates, can be cut in good condition. In a sense, the wide application of laser cutting technology is a major progress in the sheet metal processing industry. The laser cutting machine is more accurate and faster, and has considerable advantages in the processing effect and quality required by the manufacturer. Therefore, it is believed that the laser cutting machine is the trend in the future cutting method selection. The laser beam has the characteristics of high power and high density. When irradiated on the plate, the plate is quickly heated to the gasification temperature, evaporating to form holes. As the beam of light moves on the material, the holes continuously form a very narrow slit to complete the cutting of the material. As a result, laser technology has widely penetrated into various processing industries such as metal processing, steel, aerospace, automobile manufacturing, medical equipment, etc. First of all, the light spot irradiated by the laser beam is extremely small, and it can be processed finely and tightly, such as the processing of fine slits and micro holes. Secondly, lasers can cut almost all materials, including two-dimensional cutting or three-dimensional cutting of thin metal plates. Finally, laser processing does not require knives, is non-contact processing, and has no mechanical processing deformation. Therefore, laser cutting technology with high efficiency, high energy and high softness has obvious advantages in terms of accuracy, speed and efficiency, and has always been popular in the sheet metal industry. Some traditional difficult-to-cut or low-quality plates can be easily solved after encountering laser cutting, especially the processing of some carbon steel plates. Laser cutting has an unshakable position.