The treatment related to posterior circulation ischemia can ensure that the blood can be metabolized and circulated normally for the human body to live, adults can live 30-50 years, and the elderly can live 3-5 years, and the specific length of life must be determined according to the treatment. Posterior circulation ischemia means carotid artery ischemia, which is a transient ischemic attack of the carotid system. Patients are found to have severe extracranial stenosis or occlusion of the carotid artery, resulting in an ischemic state in which the blood vessel relies on the collateral blood supply circulation. Patients suffering from posterior circulation ischemia are pale, thin, and unable to do strenuous exercise, and once they do strenuous exercise, they will have insufficient blood supply to the brain, which will lead to difficulty in breathing. If dizziness and lightheadedness occur, it is necessary to take vascular drugs for treatment, pay attention to controlling blood pressure within the normal range, and drink water to ensure normal metabolism of blood circulation in the body.