Coronary heart disease is a kind of heart disease in which coronary arteries are severely atherosclerotic narrowed or blocked, or combined with spasm and thrombosis on this basis, resulting in narrowing of coronary artery lumen and causing insufficient coronary blood supply, myocardial ischemia or myocardial infarction. Coronary heart disease is the leading cause of death in Western countries. Although China is a low incidence country, the incidence and mortality rate of coronary heart disease has been increasing year by year in recent years and has become the main cause of death. Epidemiological studies of coronary heart disease show that there are obvious regional differences in the incidence and mortality of coronary heart disease events in China, with the mortality rate of coronary heart disease being higher in urban than in rural areas. The northern provinces and cities in China are higher than the southern provinces and cities, the highest incidence rate for men is Qingdao, Shandong Province, 108.7/100,000, the lowest is Chuzhou, Anhui Province, the difference between the two is 32.9 times; the difference between the two mortality rates of 17.6 times. Risk factors of coronary heart disease 1, hypercholesterolemia Hypercholesterolemia is one of the most harmful risk factors for coronary heart disease among all risk factors, and cholesterol is treated as the number one in the interventional treatment of coronary heart disease. 2, hypertriglyceridemia Triglycerides have been shown to be an independent risk factor for coronary artery disease. 3, smoking Smoking is one of the important risk factors for coronary heart disease. Clinical studies have shown that: smoking 10 cigarettes a day, the risk of cardiovascular death increases by 18% in men and 31% in women; the risk of cardiovascular disease is reduced by 35%-40% in hypertensive patients who stop smoking a pack of cigarettes a day. The relative risk of sudden death from coronary heart disease was 10 times greater in male smokers and 4.5 times greater in women than in nonsmokers, and this risk decreased rapidly after stopping smoking, and after 3 years their risk of coronary heart disease was similar to that of nonsmokers. Therefore, smoking as a risk factor is the easiest and most economical in terms of treatment, and it is recommended that people who already suffer from coronary heart disease or combined with other risk factors immediately prohibit smoking. 4, hypertension Hypertension is also an important risk factor for coronary heart disease. According to statistics, there are about 110 million hypertensive patients in China, and only 30% have received drug treatment. Research shows that: diastolic blood pressure > 105mmHg of hypertensive patients whose risk of coronary heart disease is 5-6 times higher than the diastolic blood pressure < 76mmHg patients, and every 7.5mmHg increase in diastolic blood pressure, the risk of coronary heart disease increased by 29%. Diabetes affects almost all aspects from atherosclerosis formation to cardiac death, and its role as a risk factor for coronary heart disease is undeniable. Diabetes often co-exists with other risk factors, and diabetic patients are often accompanied by hypertension, obesity, hyperlipidemia, etc. 6, family genetic history Coronary heart disease has a clear genetic predisposition. Studies have shown that: the risk of coronary heart disease increases 2.0-3.9 times for people with a family history of coronary heart disease compared to those without a family history of coronary heart disease, and the risk of myocardial infarction increases 2.2 times, and the occurrence of coronary heart disease is several years earlier. 7, obesity obesity is an independent risk factor for cardiovascular disease. 50 years old after the incidence of cardiovascular disease in obese men is 2 times that of non-obese people, in women is 2.5 times. The risk of coronary heart disease is greater for those with centripetal obesity. If simple obesity is not accompanied by hypertension, diabetes and hyperlipidemia, the risk of coronary heart disease should be relatively reduced. 8, alcohol consumption alcohol consumption and coronary heart disease relationship has not been fully elucidated. At present, most research data show that the relationship between alcohol consumption and coronary heart disease is "U" type, light drinking (ethanol 10-30 grams / day) when the risk of coronary heart disease is lower than those who do not drink, but excessive drinking can increase the risk of coronary heart disease, hypertension and cerebral hemorrhage.