Patients with carotid artery stenosis in 70 year olds can survive anywhere from a few years to a few decades if their symptoms are well controlled and they do not develop complications such as carotid artery thrombosis and other comorbidities. Carotid artery stenosis is a common cerebrovascular disease in clinical practice, which is caused by atherosclerotic plaque formation that blocks the blood vessels, and can be treated with medication and arterial stenting to alleviate the symptoms. After scientific diagnosis and treatment, the symptoms can be effectively controlled without affecting the patient’s life and survival. For patients with lower degree of stenosis, plaque can be stabilized and disease progression can be slowed down through medication, and life expectancy is generally not affected by good control. For patients with severe stenosis, stents can be placed to reduce the degree of arterial stenosis after a comprehensive evaluation, and after the procedure, with medication, survival can range from several years to several decades.