After several years of information technology upgrading, the application of BIM technonlgy has been proved to play an important role in improving the level of enterprise information, promoting the upgrading of project management information systems and enhancing the core competitives of enterprises. The informatization of prefabricated building management is inseparable from the support of BIM technology. In order to realize the application of BIM technology in the whole life cycle of prefabricated steel structure residence, give full play to the comprehensive benefits of construction industrialization and informatization, and improve the construction quality, this paper discusses the actual benefits obtained by using BIM technology from the perspective of construction general contracting management in terms of engineering technology, quality, safety and schedule, and sorts out the application results of BIM at each stage.