Abstract: 　Aiming at the situation of spontaneous combustion in goaf during stop-mining and withdrawal in Tunbao Coal Mine, the characteristics of spontaneous combustion in goaf of M15 coal seam and the difficulty of controlling are analyzed. During the last mining period, conventional fire-fighting techniques were used to eliminate the hidden danger of spontaneous combustion in goaf. However, the working face was forced to be closed for a long time due to the existence of abnormal high temperature points; the conventional means of fire prevention is difficult to eliminate the high temperature point. Through the construction of fire extinguishing channel, reduce construction fire prevention drilling in length, improve the drilling accuracy, reinject fire-fighting material to reduce the abnormal high temperature point area, the coal temperature in the abnormal high temperature point area can be reduced.