BIM technology has been widely used in the construction industry and is helping the construction industry to develop to a new stage. In view of the many difficulties in the project of Beijing New Airport, including large scale, scattered construction, complicated steel roofing and complicated decorative panel, this paper mainly introduces the BIM application in the engineering construction progress in areas of site layout, construction guidance, pipeline layout optimization, progress management, and safety protection, which helps to establish "high-quality projects, model projects, safety projects, clean and honest projects". The BIM application has effectively saved the cost, shortened the construction period, guaranteed the smooth progress of the project, and improved the management level of the project, which provides some reference and reference for the application and expansion of BIM in similar projects.