The invention discloses a moxa stick for improving brain health, which is characterized by comprising the following raw medicinal materials in parts by weight: 200 parts of folium artemisiae argyi, 1-5 parts of eaglewood, 5-15 parts of polygonum multiflorum, 1-5 parts of mulberry, 5-15 parts of dogwood, 10-20 parts of liquorice, 5-15 parts of sealwort, 4-8 parts of the bark of eucommia, and 4-8 parts of spina date seed. The invention further discloses a preparation method of the moxa stick. Because of being prepared by adding medicinal materials into folium artemisiae argyi, the moxa stick disclosed by the invention is safe, nontoxic and convenient to use, has the effects of stimulating the menstrual flow, activating collaterals, restoring consciousness, enlightening, reinforcing kidney, protecting liver, reducing internal heat and dispelling depression, is capable of improving brain health and preventing and treating brain diseases, and has good effects on a series of diseases caused by insufficient cerebral blood supply, such as cerebral infarction, cerebral arteriosclerosis, insufficient cerebral blood supply, infantile autism, depression and encephalatrophy; meanwhile, the moxa stick for improving brain health, which is disclosed by the invention, is capable of relieving emotion of people, reducing stress and improving sleep and has the obvious effect on psychiatric problems caused by tension and stress, such as schizophrenia.