Abstract: Aiming at the problem of roof aquifer and overlying goaf water accumulation in 15104 working face of Xinzhen Coal Mine, transient electromagnetic and channel wave methods are used to carry out geophysical prospecting before and after drainage, to find out the abnormal water-rich area and internal geological structure of the roof of the working face, and to verify and explore the water accumulation and aquifer in the geophysical anomaly area and goaf.The results show that a total of 7 low-resistance abnormal areas are found before water drainage, and the abnormal areas are mainly caused by the relative water accumulation in the overlying goaf and the relative water abundance in the roof aquifer.The variation of the water inflow of the exploration and drainage boreholes shows that the goaf water in the affected area of the working face mining in Xinzhen Coal Mine has been drained, and the lateral dynamic water recharge amount of the direct water-filled aquifer in the affected area of the working face mining has been proved, which provides a basis for the prediction of the water inflow of the working face and the drainage of similar mining areas.A total of 3 low-resistance abnormal areas were found after dewatering.The comprehensive analysis concluded that the abnormal areas were mainly caused by the local relative water-richness of the overlying bedrock fissure aquifer.The lateral dynamic recharge and static reserves of the sandstone aquifer revealed by the water exploration and drainage borehole were small, which did not affect the safety of water prevention and control in the working face.