The pathological basis of coronary heart disease is coronary atherosclerosis, which is a progressive chronic disease with high morbidity, so coronary heart disease is characterized by a high recurrence rate. Prevention of coronary heart disease includes primary prevention (for people at risk without coronary heart disease) and secondary prevention (for patients who already have coronary heart disease), and preventive measures are necessary for both patients with coronary heart disease and people at high risk of coronary heart disease. Secondary prevention of coronary heart disease means taking preventive and curative measures for patients who have already had coronary heart disease, with the aim of improving symptoms, reducing death and disability, and preventing recurrence of coronary heart disease. There are two main measures for secondary prevention of coronary heart disease, one is to find and control risk factors; the other is reliable and continuous drug treatment. The prevention of coronary heart disease should be comprehensive in terms of diet, exercise, medication and risk factor control, especially for patients with established coronary heart disease, the purpose of prevention is to improve symptoms and prevent progression and recurrence. The prevention and treatment of coronary heart disease should include two ABCDEs, which are used in all stages of the development of coronary heart disease. Only by adhering to secondary prevention can we effectively treat the causes of coronary heart disease and effectively reduce recurrence. Secondary prevention advocates “double effective”, that is, effective drugs, effective dose. It is a taboo for secondary prevention of coronary heart disease to stop eating and stop eating, which is not only ineffective but also more dangerous. Secondary prevention has two “ABCDE”, one is indispensable. (A) ABCDE A, aspirin is mainly anti-platelet agglutination and release, improve the balance of prostaglandin and thromboxane A2, to prevent the formation of atherosclerosis, from the clinical point of view, the daily routine intake of aspirin enteric soluble tablets 100 mg, can prevent the recurrence of coronary heart disease. B. Blood pressure High blood pressure can accelerate the speed and extent of the development of atherosclerosis, the higher the blood pressure, the greater the chance of coronary heart disease or recurrence of coronary heart disease, effective antihypertensive treatment can prevent the recurrence of cardiovascular disease. C, blood lipids High blood lipids on the one hand make the blood sticky, slow blood flow, and reduce the amount of blood supplying the brain, and on the other hand damage the endothelium of blood vessels and form atherosclerotic plaques in the walls of blood vessels, which directly lead to the occurrence and development of cardiovascular and cerebrovascular diseases. D. Control diabetes More than 80% of diabetes leads to abnormal lipid metabolism, often accompanied by atherosclerosis, hyperlipidemia complicating cardiovascular disease, and the increase of glucose content in the blood will also increase blood viscosity and coagulability, which is conducive to the formation of coronary heart disease. E .Rehabilitation education Through network propaganda, free practical reading materials, regular rehabilitation guidance, etc., to strengthen the popularization of coronary heart disease, atherosclerosis, hypertension prevention knowledge. Actively intervene in risk factors, so that patients can patiently accept long-term prevention and treatment measures and actively cooperate with drug therapy. (B) ABCDE A , active exercise Appropriate exercise can increase fat consumption, reduce cholesterol deposition in the body and improve insulin sensitivity, which is beneficial for preventing obesity, controlling body weight, increasing circulatory function, adjusting blood lipids and lowering blood pressure, and reducing blood clots, and is an active measure to prevent and treat coronary heart disease. It is not advisable to do strenuous exercise, such as fast running, mountain climbing, etc., but jogging, walking, soft gymnastics, taijiquan and other aerobic exercises. B, weight control Maintain or reduce weight, so that the BMI is maintained at 18.5-24.9kg/m2, waist circumference C, quit smoking and limit alcohol Cigarettes contain more than 3,000 kinds of harmful substances, nicotine inhalation in the human body, can stimulate the plant nerve, vascular spasm, heart rate increases, blood pressure rises, blood cholesterol increases, thus accelerating atherosclerosis. D, reasonable diet food diversity, cereal-based; should eat more coarse grains, nuts, seaweed and other magnesium-rich food; eat more vegetables, bananas, potatoes and more fiber food; eat milk, beans or their products every day; often eat the right amount of fish, poultry and eggs, lean meat, less fatty meat, meat skin, hooves and meat dishes; food and physical activity to balance, to maintain the appropriate weight; eat light less salt, less sugar diet, the amount of salt down to 6 grams per day About. E. Emotional stability Optimistic and stable emotions, a relaxed and balanced mind is not only an important factor in the prevention of cardiovascular disease, but also the key and secret to longevity.