Abstract: In the context of energy conservation, environmental protection and green development, green buildings are the key to promoting urban green development. At present, my country's urban development process is getting faster and faster, and the number and types of urban buildings are also increasing. Steel structure has a long history of development in China's construction development, and meets the requirements of China's sustainable development, so it has a wide range of applications in the construction industry. This article mainly analyzes the advantages and application status of steel structures in prefabricated buildings, in order to promote the further development of prefabricated steel structures.