The invention discloses a traditional Chinese medicine composition for preventing and treating mammary gland hyperplasia. The traditional Chinese medicine composition is mainly prepared from the medicines such as radix paeoniae alba, radix paeoniae rubra, herba leonuri, herba lycopi, common selfheal spike, fructus citri sarcodactylis, fructus aurantii immaturus, rhizoma cyperi, fiverleaf akebia fruit and fructus liquidambaris according to certain weight proportion. The traditional Chinese medicine composition can be made into any common dosage form for oral administration. The whole formula has the functions of nourishing blood and soothing liver, activating blood and promoting qi circulation, inducing diuresis and removing stasis and removing stasis and relieving pain, and realizes an exact curative effect on preventing and treating the mammary gland hyperplasia.