In view of the traditional computer room network operation and maintenance system is not intuitive, there are security risks in the process of system operation and management, it is not easy to quickly remove obstacles and other problems, this paper studies and discusses the application of virtual reality technology which is widely used in network operation and maintenance. It designs the overall structure of the operation and maintenance visualization system, the integration of monitoring system, equipment management and maintenance functions, and uses virtual reality technology to build a visual network operation and maintenance management platform of the computer room environment, resources, equipment and monitoring management information in a 3D environment. The manager can intuitively and quickly grasp the operation state of the equipment, parameter performance indicators, the operation condition, the asset capacity and so on, clarify the design thought and architecture of the network operation and maintenance visualization system, improve the management efficiency of the network operation and maintenance of the computer room.