I. Overview of the prevalence of coronary heart disease Coronary heart disease is also known as coronary atherosclerotic heart disease. It is caused by atherosclerosis of the coronary arteries supplying blood to the heart muscle, narrowing the coronary arteries and causing insufficient blood supply to the heart muscle. Due to the different duration and severity of lumen narrowing or occlusion caused by coronary artery disease, it can be manifested as occult heart disease, angina pectoris, myocardial infarction, myocardial sclerosis and sudden cardiac death. Second, the diagnosis of coronary heart disease Diagnosis of coronary heart disease is mainly based on the patient’s symptoms and relevant examinations. At present, some non-invasive clinical examination methods such as electrocardiogram, myocardial enzymology, echocardiogram, 24-hour ambulatory electrocardiogram, exercise test and nuclear myocardial perfusion imaging can provide many important information about coronary heart disease, but lack accurate understanding of coronary artery lesions. Coronary angiography is the current gold standard for the diagnosis of coronary artery disease. It uses a cardiac catheter to perform radiographic imaging of the coronary arteries and is a direct diagnostic tool that allows seeing is believing. Coronary angiography can clarify the details of coronary vascular anatomy and lesions, and at the same time can provide a direct basis for the selection of the next treatment. It is suitable for clinical cases of repeated chest pain that cannot be diagnosed but cannot exclude coronary heart disease, painless myocardial ischemia, unexplained intractable arrhythmia, heart failure, and preparation for cardiac surgery. III. Health education on coronary heart disease 1. Carry out health promotion, popularize knowledge on prevention and treatment of coronary heart disease, and provide health education to adolescents in schools. 2.Rational diet, total calorie intake should not be too high, avoid excessive intake of sucrose and fructose, animal fat and foods with high cholesterol content, limit salt, and eat more vegetables and fruits rich in potassium, magnesium and vitamin C. 3, to develop healthy habits, non-smoking, less alcohol, appropriate physical activity, adhere to physical exercise, prevent obesity, change the type A personality, avoid high mental tension state. 4.Regular physical examination, systematic health management, identification of individuals who may produce hypertension in adulthood through group blood pressure general examination in children, early prevention and control of coronary heart disease diagnosis method.