Abstract: Based on the course of CO overrun in 22305 working face and coal spontaneous combustion governance in the overlying goaf of Bulianta Coal Mine of Shenhua Shendong Group, this paper gave some governing and decision-making experience after CO overrun caused by residual coal spontaneous combustion in the overlying goaf. Firstly, through the analysis of CO overrun in 22305 working face, it obtained the current status and conditions of spontaneous combustion in the overlying goaf. Then ground drilling method was used to locate and analyze the spontaneous combustion high-temperature region in 22305 working face, and the governance plan was given. Meanwhile the implementation effect of this program was monitored and analyzed. Finally, the problems in the practical work and the direction of improvement were analyzed. The results showed that: the high-temperature region locating method and governance programs were reasonable and effective, which provided references and experiences for the fire prevention and extinguishing in other mines with similar conditions.