Inadequate blood supply to the heart is known as myocardial ischemia. Myocardial ischemia is a cardiovascular disease. The heart needs constant perfusion of blood and at the same time a large amount of oxygen supply. When the blood perfusion is reduced, there will be insufficient oxygen supply and abnormal myocardial metabolism, resulting in the inability to support the normal work of the heart. Usually myocardial ischemia can seriously endanger the health of middle-aged and elderly people. In recent years, with the high standard of living, coronary atherosclerosis is showing a younger trend, and some young people in their 20s and 30s are also showing myocardial ischemia, and most cardiovascular diseases are currently caused by myocardial ischemia, and common diseases caused by myocardial ischemia include myocardial infarction, angina pectoris and arrhythmia. Epidemiological studies have found that important risk factors associated with atherosclerosis include hyperlipidemia, hypertensive disorders, diabetes, smoking, obesity, increased homocysteine, low physical activity, advanced age, and being male, so attention is needed.