A research idea is put forward,in which catalytic oxidation mine gas to methanol in liquid phase using oxygen as oxidant.The mechanism of liquid-phase catalytic oxidation of methane is introduced.Moreover,for thermodynamics of mine gas catalytic partial oxidation to methanol,research basic of liquid-phase partial oxidation of methane to methanol,effect of preventing blast for nitrogen in mine gas and experimental system made by us,the feasible of catalytic oxidation mine gas to methanol in liquid phase is discussed.