Coronary artery disease is a clinical syndrome of myocardial ischemia or infarction caused by narrowing, spasm or occlusion of the coronary arteries. The pathology leading to the development of coronary heart disease is atherosclerosis of the coronary arteries, which causes abnormalities in the structure and function of the coronary arteries. According to the pathology of coronary heart disease can be called coronary artery atherosclerotic heart disease. 1, the cause of coronary heart disease is not yet clear, many experts through long-term analysis of coronary heart disease cases, that there are many risk factors that trigger coronary heart disease, such as psychological factors, social factors, personality factors and biological factors. 2, among many risk factors, there are three major risk factors for the development of coronary heart disease generally recognized so far, namely hypertension, dyslipidemia and smoking. These three factors are mainly common in people aged 35-64 years old, about two-thirds of them have risk factors for the development of coronary heart disease, many of them are obese and diabetic people also have the risk of developing coronary heart disease. The incidence of coronary heart disease and death rates are significantly higher in people with the major risk factors compared to those without these factors. It shows that coronary heart disease can be prevented, and good prevention is very important to reduce the incidence and death rate of coronary heart disease. 3, coronary heart disease mild or early patients also have many in the usual does not have any discomfort, or only when exertion or strenuous exercise, only to appear chest pain or chest tightness, pressure, rest this feeling will naturally disappear. So this unnoticeable symptom is often ignored by patients and they fail to go to the hospital for examination in time. When the condition worsens and the patient goes to the hospital, he or she is already sick and blind. The opportunity for early diagnosis and treatment is lost. Therefore, patients should go to the hospital for treatment as soon as possible.