Inadequate cerebral blood supply in the elderly should be given mainly to improve blood circulation, improve cerebral metabolism, and give aspirin anti-platelet aggregation therapy. The main drugs to improve brain metabolism are Olacitant and Piracetam. Drugs to improve blood circulation, mainly include Ginkgo biloba drops, Peiyuan Tongbao capsule, Cipro. The main cause of insufficient blood supply to the brain in the elderly is atherosclerosis. The main risk factors that cause atherosclerosis include high blood lipids, high blood pressure and high blood sugar. If a patient has any of these risk factors, he or she should be treated accordingly. Patients with hypertension tend to damage the intima of blood vessels, which can cause the tangible components of blood to collect in the walls of blood vessels and cause stiffness of the walls and narrowing of the lumen, which can lead to insufficient blood supply to the brain. In addition, patients with hyperlipidemia and hyperglycemia have increased blood viscosity, which can cause slow blood flow and can also lead to stiffness of the vessel wall and narrowing of the lumen, resulting in insufficient blood supply to the brain.