Water hazards are one of the major disasters in coal mining. In this paper, the composition principle, method, functional characteristics and practical application of the three-dimensional visualized water hazard warning system of Gequan Mine east well water hazard warning system were described, and the scientific and effective monitoring techniques such as micro-seismic and electric coupling were used to realize the dynamic monitoring of water hazards in the whole mining process, which provided a strong guarantee for the safety mining.