Abstract: Simulate the coal mine ventilation air methane（VAM） with extremely low concentration methane,0.75 percent and 0.5 percent.Then put these two kinds of methane through high temperature furnace,collect and test the exhaust air in order to get the conditions and rules of VAM high temperature oxidation.Study the oxidation condition of VAM by adjusting furnace temperature and methane velocity,get the relationship between oxidation condition and its reaction time,methane concentration.The results show that,the higher the methane concentration,the lower the needed oxidation temperature.The shorter the reaction time,the higher the desired oxidation temperature.The VAM in furnace begins to oxide at 850 ℃,completely consume at around 900 ℃.