Analysis of the needs of power operation and maintenance system to achieve the allocation of electricity once, the secondary equipment maintenance operation and maintenance management, including operation and maintenance management, fault diagnosis and processing, operation and maintenance information, maintenance management, inspection process management; Using Html + Bootstrap to establish the front-end platform to provide the operation and maintenance service with the Rest API [1, 2, 3] way. The server side constructs the distributed service as the support platform of the operation and maintenance data service by the Node JS and the time series database; the system can effectively enhance Power operation and maintenance efficiency, control the number of abnormal power events, improve the level of power operation and maintenance to ensure the safety of power system infrastructure, continuous and reliable operation.