8101 working face of the Madautou Mine of Datong Mining Group is a Class II self-combustion seam, which is prone to natural ignition of floating coal in the goaf behind. The research results are of great significance for the guidance of natural fire prevention and control measures such as nitrogen injection, yellow mud grouting, and drilling glue injection at the upper and lower corners of the working face, and provided an important guarantee for the safe and efficient recovery of the working face.