Whether 70-year-old patients with 70% stenosis need stenting depends on whether the patient has symptoms and the location of the stenosis. Clinically, for patients with severe blockage of blood vessels, if there are symptoms of angina associated with the stenosis, coronary angiography should be performed to assess the situation. If there is a 70% stenosis in the main stem of the blood vessel accompanied by symptoms, a stent can be implanted; if the stenosis is in the distal end of the blood vessel, medication can be used to treat the stenosis conservatively. The main stem of the blood vessel has 70% stenosis, if accompanied by symptoms need to be dealt with in time, otherwise it may lead to serious ischemic symptoms, and even the risk of sudden death of myocardial infarction; the distal end of the blood vessel 70% stenosis does not meet the criteria for implantation of a stent, you can use oral medication for conservative treatment, oral aspirin, atorvastatin and other drugs. Elderly people with coronary artery stenosis should assess the severity of the disease, the site of stenosis, in order to decide whether to implant a stent, the specific treatment program should follow the doctor’s instructions.