Repeated chest discomfort is necessary to exclude the possibility of coronary angina. Coronary angina is due to severe stenosis of one or more of the three coronary arteries on the surface of the heart. When the stenosis exceeds 50%, a patient with coronary artery disease is defined, and if the stenosis exceeds 70%-75%, severe myocardial ischemia is considered. The manifestation is exertional angina, including sudden onset of chest tightness and chest pain after activity, or just the discomfort in the precordial area and behind the sternum, which lasts for a short time, mostly 3-5 minutes, not more than 15 minutes, and not more than half an hour, usually not accompanied by sweating, and most people can get better quickly after resting in place or stopping activity. Carry with you quick-acting heart pills or nitroglycerin, after taking such drugs orally, the chest pain can be significantly relieved within 1-2 minutes, or even completely subside. It is important to go to the cardiology department of the hospital for further examination of electrocardiogram, cardiac ultrasound, coronary CT, in addition to repeated blood tests to exclude acute heart attack. If a coronary heart disease population is finally diagnosed, coronary angiography and, if necessary, stent implantation can be performed to open the narrowed vessels. If the patient does not need stent implantation yet, he or she can take long-term oral antiplatelet drugs, lipid regulating and plaque stabilizing drugs, coronary dilation drugs, etc. to control the symptoms and relieve the condition.