If a patient has coronary atherosclerosis and the current condition is not very severe, and only mild vascular stenosis exists, many patients may have no uncomfortable symptoms. If patients currently have moderate or severe stenosis of the blood vessels, such people may present with chest tightness, chest pain, panic, weakness, and palpitations. Some patients may present with crushing pain behind the sternum, and others may have pain radiating to the left shoulder, left posterior back, and left forearm and left ring finger. Other patients have mainly gastrointestinal symptoms, such as nausea and vomiting, mistakenly thinking that an acute abdomen has occurred, when in fact an acute coronary syndrome has occurred. Treatment is mainly combined with antiplatelet, anticoagulation, circulation improvement and vasodilatation therapy, commonly used drugs are clopidogrel, aspirin, isosorbide mononitrate, Vanzantel, metoprolol, etc., and if necessary, can also be combined with coronary intervention.