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The single phase α-MnO2 and in-situ supported α-MnO2/ZrO2 with different ratios of Mn/Zr were synthesized by one-pot hydrothermal method. They showed superior activity for catalytic oxidation of methane and even better than that of 1％ Pt/Al2O3. The T50 of MnO2/ZrO2 catalysts with different ratios of Mn/Zr were located in the range of 315-335 ℃ at a WHSV of 90 L g?1 h?1, whereas that of Pt/Al2O3 was 380 ℃. After sulfur ageing, the MnO2/ZrO2 catalysts with Mn/Zr ratio of 2:1 (2MnO2/1ZrO2) and 1:1 (1MnO2/1ZrO2) exhibited satisfying sulfur resistance in comparison to the pure MnO2. The 2MnO2/1ZrO2 catalyst also showed acceptable catalytic sta-bility, and the addition of 10 vol％ CO2 had no obvious negative effect on its stability, whereas the addition of 2.6 vol％ H2O caused slight but reversible decreasing methane oxidative activity.