Abstract: The retracement cycle of I011402 working face in Shenhua Xinjiang Energy Company Tunbao Coal Mine is nearly 2 months. In order to prevent the spontaneous combustion of residual coal at the working face and eliminate the fire threat of the working face, for the spontaneous combustion characteristics of coal seam and the fully mechanized caving mining in close coal seams of Tuobao Mine, first, measuring the air leakage of mine, and then developing a comprehensive fire preventing and extinguishing program, taking natural fire warning monitoring, curtain injection nitrogen, preventive grouting, plugging air leakage channels and drilling fire prevention materials and other comprehensive technical measures, all these protect the safe retracement of work face.