Abstract: Combined with the actual engineering project of prefabricated building, this paper discusses the application of building information modeling (BIM) technology in prefabricated building. Making use of the advantages of information sharing and cooperative work of BIM technology, collision checking, construction simulation, node deepening design, operation and maintenance management are carried out on BIM collaborative platform, which can effectively avoid all kinds of collisions and errors, optimize operation flow, save resources, and improve construction efficiency.