Due to the late start of industrialization in China and relatively weak technology accumulation, there is a significant gap between industrialization capabilities of advanced technologies and industrial powers, and the upgrading of China's manufacturing industry is facing a series of challenges. The emergence of 3D printing technology has brought endless possibilities to the manufacturing industry. 3D printing has reduced the manufacturing cost of the manufacturing industry, and manufacturing efficiency has also been continuously improved. With the progress of 3D printing technology, we look at how 3D printing technology has changed the traditional manufacturing industry.