The invention discloses a method for plating a fingerprint resisting film on a surface of an aluminum alloy after anodic oxidation treatment. Firstly, anhydrous ethanol is used for cleaning; then, plasma is adopted to clean to remove inorganic matters with loose structures and organic matter impurities with low surface energy which are attached on the surface to expose the surface with unsaturated chemical bonds after anodic oxidation; then, a magnetron sputtering technology is adopted to plate the surface of a matrix with a metal oxide and nonmetal oxide mixed buffering layer; the buffer layer is a colorless transparent film; and finally, a vacuum evaporation plating technology is adopted to plate the buffering layer with the fingerprint resisting film. The method is mainly applied to electronic product protecting shells for promoting touch and preventing fingerprint residues, can improve the adhesion of the fingerprint resisting film and the aluminum alloy matrix on the basis of not changing the color of the aluminum alloy matrix, is smooth in product surface touch, and is not easily contaminated by fingerprints.