Magnesium alloy has good light weight, machinability, corrosion resistance, shock absorption, dimensional stability and impact resistance, far superior to other materials. These characteristics make magnesium alloys have applications in a wide range of fields, such as transportation, electronic industry, medical field, military industry, etc., and this trend will only increase. Especially in the fields of 3C products (Computer, Consumer Electronic Product, Communication), high-speed rail, automobiles, bicycles, aerospace, architectural decoration, hand tools, medical rehabilitation equipment and other fields, it has good application prospects and great potential. Become one of the development directions of new materials in the future.