Insufficient blood supply to the vertebrobasilar artery, that is, posterior circulation ischemia, treatment is mainly anti-platelet aggregation therapy, lipid regulating and plaque stabilization therapy, blood circulation and improving cerebral metabolism, etc. 1, anti-platelet aggregation therapy is mainly aspirin or clopidogrel, etc. 2, lipid regulating and plaque stabilization drugs are mainly atorvastatin calcium or resulvastatin calcium, etc. 3, blood circulation and blood stasis drugs If the patient has nausea and vomiting, the patient can add drugs to protect the gastric mucosa, such as pantoprazole, etc. When using the above drugs for treatment, the toxic side effects of the drugs should be closely observed and reviewed at regular outpatient clinics. In addition, it is also necessary to treat the patient’s primary disease, such as controlling the patient’s blood pressure, blood sugar and blood lipids. The dietary habits should also be low salt and low fat diet, drink more water, and stop smoking and limit alcohol.