The varieties of catalysts for CO oxidation,and the reaction types and mechanism of CO oxidation are systematically introduced.Research progress on application of copper-based catalysts (monometallic oxide,bimetallic oxide and multi-metallic oxide) in CO oxidation reaction is summarized.The affecting factors for catalytic performance of the catalysts in CO oxidation are also analyzed.In addition,the research direction of copper-based catalysts for CO oxidation is prospected.