The management decision of Zizhi Tunnel is difficult due to huge maintenance project and numerous maintenance objects. Hence, the building information modeling (BIM) technology is introduced. And then the operation and maintenance model of Zizhi Tunnel including structure, ventilation, water supply and drainage and power supply is established based on secondary development of BIM software according to the design drawings and engineering practice; and a operation and maintenance system for Zizhi Tunnel based on browser/server (B/S) architecture is developed combining with the web 3D display technology. The system is superior to the conventional management mode in terms of visualization degree, spatialization and usage. The system provides modules such as threedimensional display, regular inspection, mechanical and electrical equipment management, monitoring and detecting data display, so that the managers can have a clear and intuitive understanding on disease data, monitoring data and detection data of tunnel in threedimensional scene. The successful application of the system to Zizhi Tunnel can provide a powerful guarantee for the quality of the operation and maintenance of the tunnel and the improvement of the operation and maintenance level.