Laser cutting is an excellent means of cutting materials. It has the advantages of less material waste, obvious cost effect in large-scale production, and strong adaptability to the processing object, is becoming more and more accepted by sheet metal producers. In the actual operation process, the laser cutting takes a large proportion of the perforation time in the thick plate processing, each laser manufacturer has developed the fast perforation technology one after another, the more representative is the high energy perforation (blow hole) , this method has the advantage of high speed, the defect is not only affect the small shape of the processing, punch into the huge energy to increase the temperature of the plate and then affect the overall cutting process. The use of low-power pulse piercing, then a long time, will lead to cutting efficiency and unit cost increase. To solve the problem of laser cutting, high peak pulse laser with small duty cycle and non-fuel oil injection on the surface of material can be used to remove the attachment on the edge of the hole and control the reasonable frequency of pulse while cooling and piercing. It is characterized in that the hole diameter is small, the edge of the hole is not attached and the heat input is low, which is convenient for the following normal cutting process. The cutting section is often encountered in the laser cutting process of medium and heavy plates. Such cutting is not only of questionable quality, but also accompanied by over-burning and serious slag sticking, so that does not reflect the high price of laser processing machine different from other cutting means of value. The important factor to improve the cutting section of carbon steel is to control the heat input into the plate and ensure the full combustion of the laser irradiation part. For stainless steel, the important factor to improve the cutting section is the improvement of beam and the effective use of auxiliary gas. The bright surface cutting technique is the result of improving the vibrators and nozzles.