The invention discloses a cream for promoting hair growth and blackening hair and a preparation method thereof, and relates to a medicine for promoting hair growth and blackening hair, in particular to a Chinese patent drug of a cream for promoting hair growth and blackening hair and a preparation method thereof. The scream for promoting hair growth and blackening hair comprises the following components: astragalus mongholicus, Chinese angelica, korean ginseng, radix polygoni multiflori preparata, pine needle, rehmanniae vaporata, semen sesami nigrum, eclipta alba, herba orostachyos, fructus rosae laevigatae, rhizoma polygonati and fructus ligustri lucidi. The preparation method comprises: the components are fried, soaked by wine, dried and smashed jointly; and a small amount of honey is added into the smashed components to prepare into Chinese patent drug pills, and the pills are bottled and stored. The cream provided by the invention can treat both principal and secondary aspect of disease according to the recognization and treatment theory of the traditional Chinese medicine to alopecia and leukotrichia mechanism, has the functions of regulating Qi and blood in inner organs, tonifying Qi, tonifying the blood, nourishing the liver, tonifying the kidney, invigorating the circulation of blood, promoting the hair growth and turning white hair into black hair, has the advantagesof scientific formula, obvious curative effect, short course of treatment and rapid desired effect, is convenient to take, is used for seborrheic alopecia, alopecia areata, alopecia totalis, alopeciauniversalis, nervous alopecia, alopecia after childbirth and the like, is also used for treating teenager leukotrichia and early white hair and turning white hair into black hair, is a new drug for promoting hair growth and blackening hair, and widely satisfies the urgent demand of the patients with alopecia and leukotrichia; and the preparation method is simple.