The groundwater system in Dingfengshan Mine includes quaternary pore aquifer group, fissure aquifer group of coal bed rock, fissure-karst aquifer group of Qixia limestone, and goaf water; the water in the system is generated from atmospheric precipitation, aquifer group, faulted structural belt, and goaf water, among them the faulted structural belt and goaf water are the major risks for the mine water inrush. The hydraulic conductivity of faulted structural belt, which is originated with in the mine, allows karst water to go into the coal mine, the key tasks for the water control in the mine focus on the investigation of the faulted structural belt and goaf water area. Methods for probing water conductivity belt mainly could rely on the combination of high-resolution three-dimensional seismic exploration with transient electromagnetic method for detecting; while methods of water prevention, according to the actual situation of maximum security, could be based on stay watertight coal (rock) column closure water shutoff, hydrophobic buck, and grouting reinforcement measures. As the goaf water is mainly distributed in north fault F5, the method for probing it is the combination of drilling with geophysical exploration, and methods for prevention are mainly building coal and rock pillars of waterproofing, probing water regularly, and leading it away in time.