We summarized and overviewed recent researches on the catalysts from the perspective of type, preparation method and performance. The majority of present studies focus on the carrier selection and loading mode of noble metal catalysts, while on intermetallic complexes, element doping, preparation methods and etc. for non-noble metal oxides. All of aforementioned studies aim at improving catalytic activity and stability, however, we suggest more attentions to be paid on the improvement of catalyst anti-poisoning performance, and the high-efficiency catalytic oxidation of mixed gas.