The present invention discloses a method for treating or suppressing degenerative brain diseases, comprising a step of administrating a Chinese herbal medicine composition to a subject in need, wherein the Chinese herbal medicine composition comprises: a first herbal formula comprising 2-40 parts by weight of Panax ginseng and 0.6-28 parts by weight of Angelica sinensis and a second herbal formula comprising 0.6-28 parts by weight of Angelica sinensis, 2-40 parts by weight of Astragalus membranaceus, and 20-96 parts by weight of a mixture of Ligustri fructus, Eclipta prostrata, and Rehmannia glutinosa.
