Abstract: The transient electromagnetic method is used for exploration in the goaf of Xingtai Xiandewang Coal Mine in Hebei Province and the unknown water supply range. For areas with severe electromagnetic interference, the method of tolerance and polynomial fitting is used for correction. The results show that there is a water accumulation area in the goaf of No. 2 coal seam in the fourth mining area of the mine, which effectively reduces the impact of water accumulation in the goaf on the safe production of the working face by drilling drainage. The ground transient electromagnetic method has provided a powerful theoretical basis for the normal safe mining of the four mining areas.