The radio wave perspective method, direct current method and transient electromagnetic method were used to find out the hydrology and geological conditions of the 1127 coal mining face of Xingdong Mine, and preventive measures were taken in advance to ensure safe mining of the working face. The results of the three-dimensional comprehensive detection method showed that the radio wave perspective method could detect the hidden and exposed geological structures inside the working face; the direct current method could detect the water rich condition in the floor and working surface of the roadway; the detection range of the transient electromagnetic method was wider and could realize full space detection in and around the working surface. The delineated water-rich anomaly area was verified by post-drilling, and the application effect was good, which provided guarantee for safe mining of the working face, with important technical guiding significance and practical application value.