In recent years, steel structures have obvious advantages over brick-concrete structures in environmental protection, energy conservation, high efficiency and industrialized production. Shenzhen Tower 325 meters high to the King Building, 421 meters above the Shanghai Pudong Jinmao Tower, Beijing's Beijing-Guangzhou Center, Bird's Nest, CCTV new buildings, water Cube and other large buildings have adopted the steel structure, Beijing, Shanghai, Shandong, Liaoning, Inner Mongolia and other provinces and cities have begun to pilot steel structures, of which Beijing Jinchen apartment has been listed as the Ministry of Construction residential steel structure demonstration project. High-rise steel structures are not uncommon People expected the 21st century is the century of metal structure, steel structure will become the backbone of the new construction era. Since human beings started to use pig iron from the 1770s and began to use the wrought iron to build bridges and houses in the early 19th century, the history of steel structure development has a long history than that of reinforced concrete structures. Its vitality is also growing. In the United States, more than 70% of low-rise buildings, such as non-residential building markets below two floors, are construction metal products. Of the 101 super-tall buildings that have been completed in the world so far, 16 are reinforced concrete structures, 59 are pure steel structures, and 27 are steel-concrete hybrid structures of different forms. It can be seen that the development of steel structures will surely urge the construction industry, metallurgical industry , Machinery industry, automobile industry, agriculture, petroleum industry, commerce, transportation and transportation have been rapidly developed.