Coronary heart disease rarely hurts all day long, coronary heart disease is also called coronary atherosclerotic heart disease, including angina pectoris and acute myocardial infarction, angina pectoris pain lasts for 3~5 minutes, rest or sublingual nitroglycerin will relieve it very quickly, acute myocardial infarction pain lasts for a longer period of time, and the degree of pain is also more intense, up to more than a few hours, you need to go to the hospital immediately. Angina pectoris is based on coronary artery stenosis, myocardial acute, transient ischemia and hypoxia caused by pain usually lasts 3~5 minutes, rarely more than 15 minutes, rest or sublingual nitroglycerin can relieve. The pain of acute myocardial infarction is more unbearable, it will be crushing, suffocating or burning, accompanied by profuse sweating, restlessness, fear, and the feeling of dying, the use of pethidine intramuscular injection can relieve the pain. Once the coronary atherosclerotic heart disease, timely medical examination and treatment.