Abstract: In order to master the distribution rules of coal spontaneous combustion risk area in goaf during the mining of large mining height working face, the 31317 large mining height working face of coal seam 3 in Chahasu Coal Mine is taken as the research object. Firstly, the natural oxidation characteristics of residual coal in working face with large mining height are analyzed by experimental test. Secondly, the “three zones” of spontaneous combustion on both sides of the goaf in 31317 working face are measured by the beam tube monitoring system, and the distribution of the “three zones” of spontaneous combustion in the whole space of the goaf is simulated. Finally, the variation characteristics of coal spontaneous combustion “three zones” in different mining heights working face with wind speed are compared, and the distribution rules of coal spontaneous combustion risk area in large mining height working face are revealed. The research results indicate that the temperature point of the mark gas in each stage of coal temperature oxidation decreases with the increase of oxygen concentration, but the rate of decline decreases gradually. The range of oxidation zone in goaf of different mining heights increases with the increase of tunnel wind speed, and the higher the mining height, the more obvious the range of oxidation zone increases. The research results provide theoretical reference for the prevention and control of coal spontaneous combustion of goaf in large mining height working face.