The invention discloses a kidney-nourishing brain-fortifying traditional Chinese medicine, a preparation method and purpose. The traditional Chinese medicine comprises carapax et plastrum testudinis, cornu cervi, fructus lycii, panax ginseng, radix et caulis acanthopanacis senticosi, herba gynostemmatis pentaphylli, fructus broussonetiae, rhizoma atractylodis macrocephalae, radix angelicae sinensis, poria, root of kirilow rhodiola, and rhizome of conic gymnadenia. The preparation method comprises adding water into carapax et plastrum testudinis and cornu cervi, decocting twice, merging decoctions and filtering; adding water into radix angelicae sinensis and rhizoma atractylodis macrocephalae, distilling for extracting volatile oil, clathrating by using belta-cyclodextrin; adding water into all of the rest medicine materials and the decoction dregs of radix angelicae sinensis and rhizoma atractylodis macrocephalae, decocting twice, merging decoctions, filtering, concentrating, adding ethanol to enable the alcohol content to reach 60%, stirring uniformly, standing for 12 h, getting the supernatant and recovering ethanol; and merging the above medicinal soup, concentrating to form a clear cream, adding the volatile oil clathrate compound, adding auxiliary materials and ethanol, and granulating. The traditional Chinese medicine is applicable to treat disease symptoms of amnesia, neurasthenia, soreness and weakness of waist and knees, spirit fatigue and strength lack, is relatively well taken by patients attacked by high blood pressure, diabetes and the like, is relatively stable in quality, is small in patient dosage, and is relatively good in adaptability.