Abstract: According to the requirements for underground multi-system fusion of Technology schemes of upgrading of coal mine safety monitoring and control system, and for the problem that fusion degree of underground monitoring and control system was not high, a new fusion sub-station with multi-communication interface and multi-sensor interface was designed. Based on the new fusion sub-station, an underground multi-system fusion method for coal mine safety monitoring and control was proposed. The fusion method adopts the new fusion sub-station to realize link level fusion, device level fusion and shared data level fusion according to field equipment acquisition interfaces, communication interfaces and fusion degree of different systems. The link level fusion can realize fusion of multiple sensor acquisition interfaces, device level fusion can realize equipment fusion of different systems, shared data level fusion can realize data sharing between different systems.