Myocardial ischemia is caused by insufficient blood supply and hypoxia to the myocardium due to coronary artery stenosis and coronary artery spasm. Whether patients with myocardial ischemia can exercise depends on the degree of myocardial ischemia, the presence or absence of standardized treatment and the type of exercise.1. Degree of myocardial ischemia: For patients with mild myocardial ischemia or in the stable stage, exercise can be performed appropriately, provided that no symptoms of myocardial ischemia such as chest pain and chest tightness occur. For patients with severe myocardial ischemia or in the acute phase, exercise is not recommended because patients are likely to experience chest tightness, chest pain and other uncomfortable symptoms, or even induce myocardial infarction, during exercise. Such patients need to take proper rest to reduce myocardial oxygen consumption and relieve the symptoms of myocardial ischemia, while actively seeking medical attention. 2. With or without standardized treatment: For patients with myocardial ischemia who have not undergone standardized treatment, exercise is not recommended. Such patients need to go to the hospital first to improve the examination, clarify the cause and then treat the cause. For example, patients with myocardial ischemia caused by coronary atherosclerosis should undergo coronary angiography. If the coronary artery is found to be severely stenosed by the angiography, it can be treated by stent implantation or coronary artery bypass surgery. When the factors of myocardial ischemia are lifted, patients should be encouraged to exercise appropriately, thus facilitating cardiac recovery. For patients who have undergone intervention, the exercise program should be formulated by the doctor to standardize the type and amount of exercise, thus helping to improve the symptoms of myocardial ischemia and facilitating the recovery of cardiac function. 3. Types of exercise: For patients with myocardial ischemia who can perform moderate exercise, they can take a walk, play tai chi, swim, and exercise gymnastics. The frequency and time of exercise are set according to the patient’s own physical condition, and the general frequency of exercise is about 3-5 times a week for about 40 minutes. In addition, it is worth noting that patients with angina should not exercise too intensely, so as not to cause a sudden rise in blood pressure and heart rate, thus causing an attack of angina. During exercise, if patients experience chest tightness, difficulty breathing, chest pain, palpitations and other discomfort, they should immediately stop exercising and rest, and if necessary, take nitroglycerin or go to the hospital.