The best exercise time for patients with coronary heart disease is recommended after 10:00 am or 3:00 pm, and each exercise time is not more than 30 minutes, you can choose to do suitable aerobic exercise, such as slow walking or jogging, swimming, tai chi, etc., to not increase myocardial oxygen consumption, no discomfort and other symptoms as the criteria for determining the amount of exercise. Coronary artery disease is an atherosclerotic heart disease, the intima of blood vessels have different degrees of lipid plaque formation caused by poor blood flow in the blood vessels and cause myocardial cells ischemia or necrosis, clinical performance angina or myocardial infarction. Too much exercise or too long exercise will increase the burden on the heart, making myocardial cells ischemia aggravated and is not conducive to the recovery of patients with coronary heart disease. It is also not recommended to exercise early in the morning or at night, because the temperature change is large, the vision is not clear enough, etc. will bring adverse effects to patients with coronary heart disease.