The main symptom of coronary heart disease is chest pain. The symptoms of chest pain can be improved by drugs, stents or bypass bridges, but the pathological changes of coronary atherosclerosis cannot be completely reversed, so the symptoms can be temporarily relieved, but it is impossible to make them disappear completely. Chest pain occurs when atherosclerotic plaques are formed in the inner walls of coronary arteries, causing narrowing of the coronary artery lumen or blockage of blood vessels by plaque detachment, resulting in insufficient blood supply to the heart muscle and causing pain due to myocardial ischemia and hypoxia. Angina pectoris and myocardial infarction are the most familiar types of coronary heart disease in daily life. If the ischemia and hypoxia are short, it manifests as angina; if the ischemia and hypoxia are long, it leads to myocardial necrosis and acute heart attack. Most patients with angina survive for many years. The main factors affecting the symptoms of patients with angina are the extent of coronary artery lesions and the functional status of the heart. The main factors affecting the symptoms of patients with heart attack are the size of the infarct extent, the production of collateral circulation and the promptness of treatment. To cure the symptoms of coronary artery disease, the premise is that the coronary stenosis can be reduced or disappeared. It was previously believed that coronary artery stenosis was already formed and could not be reduced. Current research has found that coronary artery stenosis is expected to be reduced through comprehensive cardiac rehabilitation treatment, which provides cardiac rehabilitation diagnosis and individualized cardiac rehabilitation programs, including the following five elements: effective medication, effective exercise therapy, non-smoking, healthy psychology and reasonable dietary status.