Abstract: Ventilation air methane (VAM) is challenging to utilize due to its low concentration, often being directly vented into the atmosphere, resulting in a waste of resources. To address this issue, an experimental study on the heat storage oxidation of VAM at different concentrations, air inflow rates, and initial temperatures with the mixing of three types of pulverized coal was conducted by using a self-built VAM oxidation experimental system. Furthermore, a grey relational analysis was carried out to examine the factors affecting the VAM conversion rate. The experimental results indicate that a higher calorific value of the mixed pulverized coal leads to a higher VAM conversion rate. Under varying concentrations of VAM, the addition of pulverized coal significantly enhances the VAM conversion rate and extends the reaction stabilization time. When the methane volume fraction is 0.6%, under the heat storage effect of pulverized coal, the conversion rate can increase by 50%, and the duration of stable reaction is extended by 36%. An air inflow rate of 1.5 m³/h can achieve a VAM conversion rate of over 50%, though the stable duration is short. The higher the initial temperature, the higher the maximum VAM conversion rate, which can reach 57.14%, with the stable duration also longer, exceeding 35 minutes. Grey relational analysis shows that the initial temperature and VAM concentration have the most significant impact on the conversion rate.