The invention discloses a novel compound metal oxide catalyst and a production method thereof. A general formula of an active component of the catalyst is ABO3-BOn-A2O2CO3, wherein A is selected fromone or two of alkali-earth metal elements or rare earth elements, B is selected from transition metal elements, and a value range of n is 1-2. According to the novel compound metal oxide catalyst, through a synergistic effect of the three oxides of ABO3, BOn and A2O2CO3, the catalytic activity of the catalyst is significantly improved, catalytic conversion of methane is achieved under a low-temperature condition without adding precious metal, and the novel compound metal oxide catalyst has excellent low-temperature catalytic activity and a long service life, and can be applied for the fields of treatment of low-concentration methane tail gas, catalytic oxidation of CO, treatment of VOCs and the like.