Abstract: Aiming at the situations of loose arching back filling, or vaults "closed and semi closed type" air leakage causing spontaneous combustion in the spontaneous combustion of coal seams and the top of excavating roadway of easy to spontaneous combustion of coal mine,and the high caved area in arching roadway, using the advantages of strong resistance properties, good permeability, large heat absorption of polymer gels, dedicated fire-fighting grouting device is used to inject new polymer gel fire extinguishing materials in a target area. Practice has proved that the material can effectively control roadway spontaneous combustion in high risk serious threat to the mine production and overcome the disadvantages of poor performance, high cost of traditional filling materials.