No.1-201 Face of Yilong Coal Industry is a mining area under pressure. When there are hidden geological structures in the working face, there is a water outburst factor that the lower aquifer rises through the fracture water channel. In order to find out the internal structure development of the working face and the water abundance of the floor strata of the working face, the exploration work was carried out in the working face by using radio wave perspective technology, audio electric perspective and direct current sounding technology, and the distribution range of water abundance abnormal area and the internal structure development area of the working face were delineated in the depth range of 80 m below the floor of No.1-201 Face. Through underground drilling verification, the water abundance of the abnormal area was identified, which provided a guarantee for the safe mining of the working face.