Abstract: The application effect of Transient Electromagnetic Method to water-disaster prediction and control in mine well is introduced through detection of water abundance of floor strata on 3702 working face in Shandong province.The results indicate that:(1)the main threat to mining on working face is higher water content of the floor magmatic strata, there are 1 watery strata zone, 4 watery areas and 5 watery strata areas with good continuity in detection direction of 90°, 45°, 30° to railway laneway;(2)3702 working face floor strata is divided into 3 class water rich area and the range of deep rich water area are larger than that of the shallow rich water area.The detection results basically tallies with the drilling verification, which indicate that the Transient Electromagnetic Method has great practical value for water abundance exploration in mine roadway, and provide a reliable basis for the prediction and prevention of mine water disaster.