A Chinese medicine hair-blackening preparation and formula and a preparation method therefor, wherein the preparation comprises ginger, astragalus mongholicus, polygonum multiflorum, black sesame, angelica sinensis, fructus lycii, ligusticum wallichii, salvia miltiorrhizae, chrysanthemum indicum, red dates, black soya bean, walnuts, cortex mori radicis, fructus liqustri lucidi, eclipta alba, mulberry fruit, fat extract of silkie, fat extract of duck, 65% ethanol solution and 40% ethanol solution; the preparation is prepared by using techniques of mixing, grinding, soaking and extraction to produce an ointment; the preparation is suitable for all hair and scalp types, and when it is used after hair wash, it produces no allergic reactions or toxic side-effects, thereby allowing the medically active elements to penetrate quickly into the skin and to be absorbed by the skin to achieve quickly visible hair blackening effect.