CH4　and　CO　oxidation　reaction　on　perovskite-like　oxides　La2-xSrxMO4　(0.01　＜=　x　＜=　1.0;　M　=　Cu,　Ni)　was　investigated　from　cyclic　voltammetry　method,　finding　that　for　suprafacial　CO　oxidation　reaction,　the　catalyst　activity　has　a　close　correlation　to　the　area　of　redox　peaks　measured　in　the　cyclic　voltammetry,　the　larger　the　peak　area　is,　the　higher　the　activity　will　be,　while　for　interfacial　CH4　oxidation　reaction,　the　activity　depends　mainly　on　the　difference　in　redox　potentials　(Delta　E),　and　the　smaller　the　difference　in　redox　potentials　is,　the　higher　the　activity　will　be.