Due to the influence of igneous rock intrusion, the contact zone at the edge of igneous rock can form a water conducting channel, which leads to sufficient supply water source in the roof sandstone aquifer of the mining area. The sandstone water discharges intensively after the roof of the coal mining face collapses, which has a great influence on the mining of the subsequent working face. The No.31 mining area of Zhangcun Mine is a syncline and anticline structure as a whole, the outside of which is syncline, and the inside is anticline. The inside is affected by the contact zone of igneous rock. After the No.3109 Face of the mining area was mined, which was the first mining face, the water inflow in the goaf increased suddenly. Although there was a slight drop in the follow-up, the overall water inflow was still large, which increased the difficulty of the subsequent mining of adjacent working faces. In view of this, this paper studied and discussed the comprehensive water prevention and control technology in the mining area. By adopting the method of combining blocking, dredging and drainage, the water inflow was controlled within a certain range, which ensured the normal mining of the working face.