Compared with general commercial complex projects, the super-large commercial complex is facing more highlighted challengesin multi-region net height analysis, complex site layout simulation, schedule control, and etc.BIM is the digital expression of architecture. BIM technology, based on the digital model, plays an important role in the owner management of urban complex project during the design and construction progresses, which is more difficult for its application in super-large commercial complex. Taking a CITIC's super-large commercial complex project as an example, this paper applies the BIM technology to assist project management in areas of net height analysis, site layout simulation, 4D schedule simulation, and discusses the difficulties and solutions of BIM technology in the construction of super-large commercial complex project.