The history of human beings is a period that people’s production is becoming more diverse and more efficient. In the early stone age, people worked hard to create simple tools one after another. With the development of technology, people started to use different kinds of machines to do production after the industrial revolution. The machines, which are designed to convert energy to work, have greatly changed the way people produce products. With the help of machines, the workers are liberated from heavy manual labor and people's material life has been greatly improved. In 1981, the first 3D printer was invented and then opened the prelude to the rapid development of 3D printing.