With the development and improvement of BIM technology in China, its main technical application in the design and construction stage has gradually matured, but its application in the operation and maintenance stage has not been well popularized and developed due to many reasons such as confusion, loss, inapplicability of information and insufficient benefit. Based on the experience of operation and maintenance management of China Southern Airlines Mansion project, this paper summarizes a set of BIM+FM technology route, and focuses on the model data processing, integration of operation and maintenance information data, application and benefits of operation and maintenance stage.