Abstract: In view of the requirements of coal mine safety monitoring system upgrade and reconstruction fusion linkage, the application architecture of multi-system fusion linkage and “one picture” mode based on WebGIS technology is proposed. On the unified GIS platform, the data interaction and correlation alarm process between the systems are designed, and the centralized display platform including environmental monitoring, personnel positioning, video image and other systems is developed. On the two-dimensional GIS map, the deep data integration and the overall application of functions of various systems are realized, which improves the efficiency of coal mine safety monitoring and the speed of emergency treatment.