In recent years, with the rapid development of laser technology, laser cutting processing is one of the most popular application technology in the laser processing industry, because of many advantages, has been widely used in automobile, locomotive and rolling stock manufacturing, aviation, chemical, light industry, electrical and electronic, petroleum and metallurgy and other industrial sectors. In recent years, laser cutting technology development is very fast, international every year to 20% ~ 30% growth rate.     Since 1985, China has been growing at an annual rate of more than 25%. Due to the poor foundation of China's laser industry, the application of laser processing technology is not widespread, the overall level of laser processing and advanced countries still have a large gap, I believe that with the continuous progress of laser processing technology, these obstacles and deficiencies will be solved. Laser cutting technology will become an indispensable and important means of sheet metal processing in the 21st century. Laser cutting processing broad application of the market, coupled with the rapid development of modern science and technology, making domestic and foreign scientific and technological workers of laser cutting processing technology continue to explore the research, promoting the development of laser cutting technology. (1) With the development of high power lasers and the use of high-performance CNC and servo system, the use of high power laser cutting can obtain high processing speed, while reducing the heat affected zone and thermal distortion; The material plate thickness that can be cut is further improved, and the high power laser can be used by using Q switch or loading pulse wave, so that the low power laser produces a high power laser. (2) according to the influence of laser cutting process parameters, improve the processing technology, such as: increase the auxiliary gas blowing force on cutting slag; Adding slagging agent to improve the fluidity of melt; Increasing auxiliary energy and improving energy coupling; And switch to laser cutting with higher absorption. (3) laser cutting will be highly automated and intelligent. By applying CAD/CAPP/CAM and artificial intelligence to laser cutting, a highly automatic multi-functional laser machining system was developed. (4) according to the processing speed adaptive control of laser power and laser mode or the establishment of a process database and expert adaptive control system to make laser cutting machine performance generally improved. Database as the core of the system, oriented to the universal CAPP development tool, the laser cutting process design involved in all kinds of data analysis, the establishment of the appropriate database structure. (5) with the development of Internet and WEB technology, the establishment of web-based network database, using fuzzy reasoning mechanism and artificial neural network to automatically determine the laser cutting process parameters, and remote access and control of laser cutting process has become an inevitable trend. (6) to the development of multi-functional laser processing center, the laser cutting, laser welding and laser heat treatment and other processes after the quality feedback integrated together, give full play to the overall advantages of laser processing. (7) THREE-DIMENSIONAL high-precision large CNC laser cutting machine and its cutting technology, in order to meet the needs of automotive and aviation industries such as three-dimensional workpiece cutting.     In particular, 3d laser cutting machine forward high efficiency, high precision, multi-function and high adaptability direction, laser cutting robot application will be more and more large. Laser cutting is developing towards laser cutting unit FMC, unmanned and automation. Among them, 3D laser cutting machine is widely used in the field of automobile manufacturing, high-precision automation, improve the quality of products, ensure efficiency and reduce costs.