This paper designs an intelligent operation and maintenance system for distribution equipment. By using the data returned by the sensors at the monitoring terminal of the plant, the real-time operation status of the distribution system can be completely mastered, the faults can be detected in time, the remote equipment monitoring and alarm can be realized, and the optimal distribution of work orders can be realized by using TOPSIS algorithm. The actual test shows that the system realizes the function of remote detection of operation status of distribution equipment, and integrates the functions of information collection, abnormal alarm, fault diagnosis and equipment comprehensive evaluation.