Abstract:The 5V feature of big data,3E feature of big data of power and the coverage of power communication network are first briefly introduced in this paper, then the application practice of big data technology in power communication network--communication management system is studied emphatically. The overall goal, management scope, application model, functional system of the communication management system are detailed analyzed. There are four major business applications in the communication management system: real-time monitoring, resource management, operation management, and professional management, covering all levels of power communication backbone network and terminal communication access network. Through system interconnection, the information sharing and application synergy between the upper and lower levels of the communication management system and the other systems are completed. The capability of network fault location, cross-professional and cross-network resource management, optimal configuration, and closed-loop management of communication services throughout the country will be improved. An enterprise-level communications management platform with intensive, standardized and intelligent features will be formed, which will provide technical support for improving the operation and maintenance capabilities of communications network.