Abstract: In view of the underground fusion of safety monitoring system and the emergency linkage demand of "man-machine-environment” in the direction of safety prevention and control under the development trend of intelligent mine construction, by studying the service characteristics, fusion methods and emergency linkage strategies of common downhole monitoring systems, combined with the safety prevention and control construction suggestions in the smart mine construction plan recently issued by National Energy Administration and local coal supervision bureau, a sub-station of edge coordination control was designed and developed to realize the underground fusion and emergency linkage of smart mine safety prevention and control system based on the sub-station of edge coordination control. This paper analyzes the key problems existing in the multi-system fusion and emergency linkage of common downhole monitoring system, discusses the technical design of multi-system fusion and emergency linkage method, and gives the technical route of “man-machine-ring” emergency linkage of three states.