Abstract: In view of the problems such as low efficiency, difficulty in fault identification and failure of potential faults in time, this paper studies the fault diagnosis and maintenance technology of mechanical and electrical equipment of coal mine boring header. On the basis of analyzing the key structure common faults and monitoring method, put forward the coal mine boring machine fault monitoring and intelligent diagnosis system, complete hardware system selection and software control system design, implements the boring machine mechanical and electrical equipment running state real-time monitoring and remote operations, turn passive maintenance for active maintenance, greatly improve the equipment operation reliability, reduce the equipment maintenance cost, improve the efficiency of mechanical and electrical equipment fault diagnosis. debugging shows that when key parts appear abnormal trend can accurately identify, and fault response time is only 1.28s, fault discovery rate of 97.8%, accurate identification and judgment of potential faults, intelligent diagnosis system greatly improve the efficiency of equipment fault diagnosis, troubleshooting time reduced to 97.3%.