Application analysis of BIM in modern architectural design and renovation is studied in the paper. he BIM technology has great advantages, BIM cloud platform technology can realize three-dimensional visualization dynamic management, file sharing, real-time communication and other functions, so that project management tends to be simplified and also faster. BIM technology is based on the establishment of the three-dimensional model to add information and data related to the project, through the establishment of the building model, and the use of digital information on the proposed building a high degree of simulation. This paper studies the novel ideas of the BIM to construct the efficient ideas.