On the surface of non-ferrous metals and their alloys using micro-arc area instantaneous high temperature sintering effect, in situ growth of ceramic oxide film protective layer of surface treatment technology. Micro-arc oxidation to overcome some of the shortcomings of anodic oxidation, the generation of ceramic oxide film has a strong bond with the substrate, high hardness and strength, good insulation, wear-resistant, corrosion-resistant, heat-resistant and so on.