This paper discusses the utilization of the mine transient electromagnetic method to detect the location of hydrological borehole that lies in the coal layer or in front of the laneway, and gives a qualitative appraisal of its hydrous characteristics. The response characteristics of the hydrological borehole reflected in the apparent resistivity pseudo-section are summarized. It is detected that the anomaly assumes circular response in the same direction as the coal layer and shows narrow elliptic response in the direction of the top and bottom of the coal layer. This method also has wide prospects in detecting the structure of the collapsed column.