The invention discloses a carbon steel or stainless steel surface micro-arc oxidation ceramic coating based on an aluminized coating, and a preparation method thereof, and belongs to the technical field of metal surface treatment. A nanoscale pure aluminum coating is formed by performing multi-arc ion plating on the surface of a stainless steel matrix, the surface of the aluminized coating is subjected to single positive pulse micro-arc oxidation, and a ceramic coating with the main component being Al2O3 is formed on the surface of the stainless steel by controlling the components of an electrolyte and electrical parameters such as the frequency and the oxidation time, so that preparation of the stainless steel surface coating with a wear-resistant function is realized. The stainless steel surface ceramic coating prepared by the method has high corrosion resistance and scratching resistance and extremely high hardness, and solves the problem that the traditional stainless steel surface treatment technology (phosphorization, chemical plating and plasma spray-coating) cannot meet requirements such as high wear resistance, high hardness, high corrosion resistance and good binding force under the condition that the coating is thin (the thickness is less than 30 microns).