It has always been a human dream to get rid of heavy physical labor and not do those dangerous, dirty and tiring jobs. This dream finally came true in the 21th century. On April 9, 1984, the world's first experimental "unmanned factory" was built in Tsukuba Science City, Japan, and began trial operation. The "unmanned factory" is equipped with various processing tools that can be automatically replaced. From machining parts to assembly to the last finished product inspection, it can be completed automatically without anyone. The trial operation has proved that it took nearly 111 skilled workers and computers to control the latest machinery, and it took two weeks to manufacture small-sized gear shifting machines and diesel engines. Now it only takes four workers one day to manufacture them. The successful operation of "unmanned factory" not only further accelerates the process of "factory automation" in the whole manufacturing industry, but also will make fundamental changes in the working hours, working methods and working objects of workers. This project was prepared by the Institute of Industrial Technology of the Ministry of International Trade and Industry of the Japanese government with the cooperation of 21 enterprises from 1977, and it cost 13.7 billion yen. In addition to the first "unmanned factory" built in Tsukuba Science City, Japan on April 9, 1984, there have been many unmanned factories in Japan. There is an unmanned factory in the pine forest at the foot of Mount Fuji. In this factory, a lot of production tasks are done by robots, and people just do some management and monitoring work. No matter day or night, the production in the factory never stops, only robots are busy. There are only 111 people in the whole factory, but they can finish the work that only 1111 people can finish.