Coronary artery blockage 90% without stenting may affect life expectancy. Coronary artery blockage 90% is very serious, and this situation at any time may lead to angina, acute myocardial infarction, easy to lead to myocardial severe ischemia or hypoxia, and will lead to malignant arrhythmia, heartbeat may suddenly stop, this kind of patients at any time will be life-threatening, the probability of death is relatively high. Currently found that 90% of coronary artery blockage, need to be placed as soon as possible stents, able to expand the coronary artery, after the operation should also comply with the doctor’s instructions oral antiplatelet aggregation drugs, aspirin, clopidogrel, etc.; lipid-lowering stabilization of plaque treatment, such as atorvastatin, etc.. If the coronary artery blockage of 90% is detected, it is recommended to decide whether stenting can be done under the guidance of professional physicians to avoid delaying the condition.