Abstract: The paper discussed design of a new type of intelligent monitoring and control system for mine main drainage and introduced working principle, key technology and concrete design scheme of the system. Besides functions of ordinary monitoring and control system, the system controls water pump to start-up by the method of dynamic water level over the mark and sends pictures of emergency fields to supervisors. It can encapsulate basic functions in Web service, so as to realize a quick view of field information in range of local area network and wide area network.