Abstract: In view of the working face of coal and gas outburst, adopting the measures of gas drainage and outburst elimination will increase the air leakage in the goaf, and then change the flow field in the goaf, resulting in too long oxidation zone in the goaf, which is easy to cause the goaf spontaneous combustion. In the N2708 working face of Daxing Mine, the embedded bundle pipe is used to observe the “three zones” of spontaneous combustion in the goaf. The results show that the maximum width of the oxidation zone is up to 153 m, which is far beyond the scope of the oxidation zone in the goaf of the common working face, and the threat of spontaneous combustion is greatly increased. Therefore, effective technical measures should be taken to prevent and extinguish the fire, so as to ensure the safe production of the working face.