When participating in sports, patients with coronary heart disease must pay attention to the following issues: 1. Avoid emotional excitement before and after exercise. Mental tension, emotional excitement can make the blood catecholamines increase, lowering the threshold of ventricular fibrillation. In addition, exercise can induce the risk of ventricular fibrillation, therefore, for patients within three days of angina attack, within six months after myocardial infarction, should not do more strenuous exercise. 2, before exercise should not be full meal. Because the blood supply in the body needs to be redistributed after eating, the amount of blood flowing to the gastrointestinal help digestion increased, while the relative reduction in blood supply to the heart, easy to cause the relative lack of blood supply to the coronary arteries, thus occurring angina. 3, exercise should be gradual, persistent, usually do not exercise, do not suddenly engage in strenuous exercise. 4, exercise should avoid wearing too thick, affecting heat dissipation, increasing the heart rate. Increased heart rate will increase the oxygen consumption of the heart muscle. 5, avoid taking a hot bath immediately after exercise. Because the whole body immersed in hot water, is bound to cause extensive vasodilation, so that the heart blood supply is relatively reduced. 6, after exercise to avoid smoking. Some people often smoke as a rest after exercise, which is very harmful. Because the heart has a post-exercise vulnerable period, smoking is easy to make the blood free fatty acids rise and release of catecholamines, coupled with the role of nicotine easy to induce heart accidents.