Aerospace manufacturing level is a yardstick for measuring a country's scientific and technological strength, and it also directly reflects the level of development of human technology. Most products are composed of millions of parts, with a wide variety and complex structures, and have extremely high requirements for stability, safety, lightweight, and refinement. Based on this, the design and manufacturing of parts in each link have extremely high process requirements and quality standards. Metal 3D printing technology can fully meet the needs in terms of complex structure forming, lightweight design, and shortened production cycle, and has become the backbone of promoting the rapid development of the aerospace manufacturing industry.