Coronary heart disease refers to atherosclerotic heart disease of the coronary arteries, coronary heart disease is the abbreviation, coronary heart disease symptoms generally have no gender differences, common symptoms of chest pain, palpitations, angina and so on. After atherosclerosis occurs in the coronary arteries, which are the blood vessels that govern the heart, the narrowing of the lumen causes myocardial ischemia and hypoxia, and a series of clinical manifestations appear. Temporary ischemia and hypoxia often cause angina pectoris, while persistent ischemia can cause myocardial infarction. If physical activity and emotional excitement, tachycardia and other conditions, myocardial oxygen consumption increases, causing myocardial oxygen supply and oxygen demand imbalance, easy to appear exertional angina pectoris. Clinical manifestations such as chest tightness in the retrosternal or precordial area, palpitations and chest pain may occur. When the above symptoms occur, it is recommended to seek timely medical treatment, active treatment with the help of doctors, and targeted treatment or therapy.