Facility management is important along the lifecycle of the buildings. Under the traditional scheme of building management, limitations in digitalization and visualization will cause many problems such as poor targeting accuracies and low operation efficiencies during the maintenances, which can hardly satisfy the requirements from facility management team. This paper has elaborated the BIM-based visualized facility management system, has discussed the key technologies in system architecture, and has introduced process and characteristics of this system from the aspects of information management, operation management, spatial management, maintenance management, energy management, and etc. Based on BIM model, through the integration of Internet of Things(IoT), this system is running on Web and Mobile terminal, which can provide a theorical reference for developing facility management system in the future. This paper is focusing on the use case of a VIP terminal of an airport, has analyzed the value of the proposed system in real scenario. Moreover, this paper has found that the value of the system is much relying on the collaboration of project participants despite the existence of sophisticated technologies.