The invention provides a traditional Chinese medicinal composition for nourishing and blacking hair and a preparation method thereof. The traditional Chinese medicinal composition is prepared from thefollowing components in parts by weight: 3 to 8 parts of ginseng, 5 to 10 parts of astragalus membranaceus, 2 to 10 parts of folium mori, 2 to 10 parts of platycladus orientalis, 5 to 10 parts of gleditsia sinensis, 3 to 11 parts of gastrodia elata, 5 to 10 parts of polygonum multiflorum, 2 to 8 parts of lucid ganoderma, 3 to 5 parts of rhizoma zingiberis recens, 2 to 8 parts of fructus cnidii, 2to 10 parts of fructus kochiae, 2 to 6 parts of radix salviae miltiorrhizae, 2 to 10 parts of cortex dictamni, 2 to 6 parts of herba menthae, 2 to 10 parts of poria, 5 to 10 parts of coix seed, 3 to5 parts of black sesame, 5 to 10 parts of black soya bean, 2 to 6 parts of juglandis, 2 to 6 parts of cortex moutan, 0.5 to 3 parts of lignum santali albi, 1 to 3 parts of flos caryophylli, 3 to 6 parts of radix angelicae dahuricae, 2 to 10 parts of rose, 1 to 3 parts of herba asari, and 3 to 5 parts of styrax. Compared with the prior art, the traditional Chinese medicinal composition has the beneficial effect that by dredging pores and activating hair mother cells of hair follicles, hair can grow normally to achieve hair loss preventing and hair growing effects; scalp is nourished, toughnessof the hair is strengthened, hair roots are strengthened, anti-dandruff, itching relieving, softening, and brightening effects are realized; and in addition, the effect is quick seen, the hair blacking and nourishing effects are good, the cost is low, and the preparation technology is simple, convenient, and easy to implement.