First of all, due to the recovery of cultivated land area and the improvement of land reseeding rate, the demand of "agriculture, rural areas and farmers" for agricultural machinery will show a rigid growth trend, has Been Increasing at an annual rate of 8% in recent years. In addition, agricultural machinery products are needed for the cultivation, planting and harvesting of grain crops, and the demand for these products is gradually subdivided, with the diversification and specialization of the types of agricultural machinery products. Among them, the demand for large and medium-sized tractors, high-performance harvesters and large and medium-sized seeders has further increased, typical machinery and equipment such as large and medium horsepower tractors, medium and large wheat combine harvesters, corn combine harvesters, wheat and corn no-till planter, etc. , such as Rape Harvester, planter, Peanut Harvester, and other agricultural backwardness of developing countries will also increase the demand for crawler and variant products. With the continuous upgrading of agricultural machinery products and the development of new products, there is a new demand for new processing methods, such as CAD / Cam , laser processing technology, numerical control and automation, and the application of these advanced technologies, will speed up the process of modernization of agricultural machinery in China. Second, the main advantages of laser cutting and its application in agricultural machinery production, the plate metal processing parts of agricultural machinery products generally adopt 4-6 mm steel plate, the plate metal parts have many kinds and are updated quickly, and the traditional plate metal processing parts of agricultural machinery products usually adopt the way of punch, die Loss is large, usually a large manufacturer of agricultural machinery used for mold storage warehouse close to 300 square meters, thus, the processing of parts if still stuck in the traditional way, will seriously restrict the rapid product replacement and technological development, and laser flexible processing advantage is reflected. With the help of modern CAD / CAM software, laser processing can realize the cutting of any shape of sheet metal. It not only has the advantages of high speed, high efficiency and low cost, but also avoids the change of die or cutter and shortens the period of production preparation time. It is easy to realize continuous machining, short transposition time of laser beam and high production efficiency. It can be installed alternately with many kinds of work pieces. When a workpiece is processed, the finished parts can be removed and the workpiece to be processed can be installed to achieve parallel processing, reducing installation time and increasing laser processing time. Laser cutting is characterized by narrow slit, small deformation, high precision, fast speed and high efficiency. First, the laser light energy is converted into amazing heat energy that remains in a very small area, so laser cutting can provide: narrow straight-edge slits; minimal heat-affected areas adjacent to the cutting edge; and minimal local deformation. The laser beam does not add any force to the workpiece, it is a non-contact cutting tool, which means no mechanical deformation of the workpiece, no tool wear, nor the replacement of tools, cutting materials without considering its hardness, that is, laser cutting ability is not affected by the hardness of the material being cut, any hardness of the material can be cut. Laser beam has strong controllability, high adaptability and flexibility, so it is convenient to combine with automatic equipment, and it is easy to realize automatic cutting process. Laser cutting with its high speed, high precision, high quality, energy-saving and environmental protection, has become the technical development direction of modern metal processing. In laser processing applications, laser cutting accounted for 32% of the market share. Laser cutting and other cutting methods, the biggest difference is that it has high-speed, high-precision and high adaptability. At the same time, it has the advantages of fine cutting seam, small heat-affected area, good quality of cutting surface, no noise when cutting, good perpendicularity of cutting seam edge, smooth cutting edge and easy automatic control of cutting process. Laser cutting plate, do not need a mold, can replace some need to use complex large-scale die punching processing methods, can greatly shorten the production cycle and reduce costs. Conclusion: With the rapid development of the agricultural machinery industry and the accelerated replacement of products, it is necessary to use advanced processing methods such as laser to shorten the development cycle of products and improve the production efficiency, in particular, laser cutting of complex parts in newly developed products is more advantageous, and laser processing will gradually become an indispensable processing method in the production of agricultural machinery, and become an emerging growth point to upgrade the modernization degree of the agricultural machinery equipment manufacturing industry, it is believed that the wide application of laser processing will promote the rapid development of agricultural machinery industry and create the most win-win situation for agricultural machinery enterprises with new technology.