Drugs to improve blood circulation in the brain are clinically available as oral drugs and sedative drugs. Commonly used oral drugs to improve blood circulation include Ginkgo biloba preparations, such as Ginkgo biloba extract tablets, Ginkgo biloba ketone ester drops, Ginkgo biloba ketone ester dispersible tablets, etc. It also includes Chinese patent medicines, such as Brain Heart Clear Tablets, Heart Brain Ning Capsules, and Blood Stasis and Pulse Capsules, etc. Vincristine extended-release capsules can also be used to improve blood circulation in the brain. Drugs that can improve blood circulation in the brain by intravenous dosing can be applied clinically as guipizide maleate, thromboxane for injection, shuxinin injection, vincristine, fasudil hydrochloride, and prostaglandin injection. At the same time, patients can also be given asparagine injection, Danhong injection, calf blood deprotein extract for injection and cytarabine injection, all of which can improve the blood circulation of the brain.