The invention discloses a processing method of a purple sweet potato anti-cancer health-care steamed sponge cake, which is mainly prepared from purple sweet potato, wheat flour, coix seed flour, oat flour, gardenia, rhizoma polygonati, pawpaw leaf, ginseng, ginseng leaf, hawthorn, pseudo-ginseng, glabrous greenbrier rhizome, radix cirsii jeponici, glossy privet fruit, apple leaf and the like. The steamed sponge cake produced by the method disclosed by the invention is convenient to eat, and has favorable appearance and flavor mouthfeel. By using the purple sweet potato as one of the production raw materials, the invention enriches the flavors of the steamed sponge cake product, so that the steamed sponge cake has more abundant nutrients. The purple sweet potato contains abundant cyanidin and chlorogenic acid which have peculiar effect and high medicinal value, and the cyanidin and chlorogenic acid have the function of inhibiting and reducing the generation of cancer cells; and meanwhile, in cooperation with the anti-cancer action of the Chinese herbal medicines, such as gardenia, rhizoma polygonati, ginseng, pseudo-ginseng, glabrous greenbrier rhizome and the like, the product has the functions of preventing cytopathy and preventing and treating cancers.