Abstract: To reduce the difficulty and blindness in judging the safety hidden danger caused by the lack of expert support system in the operation of mine belt conveyor, through collecting and analyzing the operation parameters and fault cases, real-time report and manual warning, treatment countermeasures and safety evaluation warning model were built. On these basis, we establish the overall information architecture and user activity model based on web, design and develop information library system based on production rules and friendly human-computer interaction interface, which were installed and used in Nanliang Coal Mine. The results show that the system can not only alarm quickly and accurately and propose the causes of hidden dangers and corresponding countermeasures, but also can evaluate the safety of conveyor, and these improve the intelligentized, visualized and information management level of the safety operation.