The length of time a patient can live with more than 90% cardiovascular stenosis depends on the patient’s treatment and individual factors, and should be analyzed on a case-by-case basis, not as a generalization. Patients with 90% cardiovascular stenosis can suffer acute myocardial infarction at any time and have a life-threatening condition. If the patient actively performs coronary stenting treatment or coronary artery bypass grafting, it can effectively open the occluded blood vessels and restore normal blood flow, and after the operation, if the patient regularly takes anti-platelet aggregation, lipid regulating and plaque stabilizing drugs, it is possible to return to a state close to normal, and generally can survive for a long time. If patients do not pay attention to it, angina pectoris may occur repeatedly or even acute heart attack, causing heart failure, arrhythmia and other conditions, which may be life-threatening at any time, but the specific survival time varies from person to person. Therefore, 90% of patients with cardiovascular stenosis are recommended to visit the cardiology department of a regular hospital in a timely manner, and a reasonable treatment plan will be formulated by a professional doctor according to the individual situation in order to prolong survival.