In order to find out the No.3 coal seam goaf water accumulation area, aquifer water abundance abnormal area and collapse column water abundance that might exist in No.3203 Face of the second mining area of Nanyang Mine, the transient electromagnetic exploration technology was used to carry out the ground geophysical exploration work, and the induced polarization method was used to verify each other. The results showed that there was no abnormal area of goaf accumulated water in No.3 coal seam, three abnormal areas of K8 sandstone water abundance were found, DX13 collapse column occurred on K8 sandstone layer and No.3 coal seam did not contain water. The application of this technology provided a geological basis for the prevention and control of mine flood caused by goaf water accumulation area and water abundance abnormal area through water channel, and the following safe mining of No.3 coal seam.