Heart disease caused by atherosclerotic lesions, inflammation or embolism in the coronary vessels, resulting in myocardial ischemia, hypoxia or necrosis, is often referred to as “coronary heart disease”. The World Health Organization classifies coronary artery disease into five major categories: asymptomatic myocardial ischemia (occult coronary artery disease), angina pectoris, myocardial infarction, ischemic heart failure (ischemic heart disease) and sudden death. They are often clinically divided into stable coronary artery disease and acute coronary syndromes. Briefly introduce the risk factors of coronary heart disease and prevention of common sense. Risk factors The risk factors of coronary heart disease include modifiable risk factors and non-modifiable risk factors. Understanding and intervening risk factors can help the prevention and treatment of coronary heart disease. The modifiable risk factors are: hypertension, dyslipidemia (high total cholesterol or high LDL cholesterol, high triglycerides, low HDL cholesterol), overweight/obesity, hyperglycemia/diabetes, poor lifestyle including smoking, unreasonable diet (high fat, high cholesterol, high calories, etc.), lack of physical activity, excessive alcohol consumption, and psychosocial factors. 2. Non-modifiable risk factors are: gender, age, and family history. In addition, associated with infections, such as cytomegalovirus, Chlamydia pneumoniae, and Helicobacter pylori. The attack of coronary heart disease is often associated with seasonal changes, emotional excitement, increased physical activity, full stomach, heavy smoking and alcohol consumption. Second, prevention of common sense 1, a reasonable diet advocate a light diet, eat low cholesterol, low animal fat food, eat more vegetables, fruits and vegetables rich in vitamin C. People over 40 years old should avoid eating too much animal fat and foods with high cholesterol, such as fatty meat, liver, brain, kidney, lung and other offal, oyster, squid, cuttlefish, bone, lard, egg yolk, roe, cream and its products, coconut oil and cocoa butter, even if there is no abnormal blood lipid. If total cholesterol and triglycerides are increased, you should consume low cholesterol and low animal fat foods such as fish, chicken, various lean meats, egg whites, soy products, etc. If possible, try to take soybean oil, vegetable oil, sesame oil, corn oil, tea oil, etc. as edible oil. 2.Prevent obesity The total calories of the diet should not be too high, to maintain a normal weight as the degree, more than 40 years old should be particularly obese prevention. The simple calculation method of normal weight is: height (cm) – 105 = weight (kg). Those who exceed the normal standard weight should reduce the total calories eaten daily, consume low-fat (fat intake not more than 30% of total calories, including animal fat not more than 10%) low-cholesterol (not more than 500 mg per day) meals, and limit the intake of sucrose and sugary foods. 3, reasonable arrangements for work and life life should be regular, do not smoke, do not drink strong alcohol, maintain an optimistic, happy mood, avoid overwork and emotional excitement, pay attention to the combination of work and rest, to ensure sufficient sleep. 4.Participate in appropriate physical labor and physical exercise Moderate physical labor and physical activity are beneficial to the prevention of obesity, exercise the function of the circulatory system and adjust the lipid metabolism, which is an active measure to prevent this disease. The amount of physical activity should not increase the burden on the heart and not cause discomfort. Gradually, it is not advisable to do strenuous activities. The elderly can take a walk, do health care gymnastics, play taijiquan, etc.