Coronary heart disease is one of the most common heart diseases, which refers to myocardial dysfunction and organic lesions caused by narrowing of coronary arteries and insufficient blood supply, so it is also called ischemic heart disease (IHD). Because of its high morbidity and mortality rate, it seriously jeopardizes the health of human beings, and is thus regarded as the “first killer of human beings”. In China, the incidence of coronary heart disease is rising at an alarming rate, and has become the first cause of death and disability in the population. Which groups of people are prone to coronary heart disease? Currently recognized risk factors for coronary heart disease include male, age, family history of early-onset coronary heart disease, smoking, hypertension, hyperlipidemia, obesity, and a clear past history of cerebrovascular or peripheral vascular obstruction. Fully recognizing and actively controlling the prevalence and changing trends of risk factors is of great significance in reducing the incidence of coronary heart disease and improving the quality of life. 1, obesity: due to the development of social and economic development, changes in dietary structure, developed transportation, more and more people are joining the ranks of obesity. Some data show that the proportion of metabolic syndrome in the obese group increased significantly compared with the normal group, while obesity itself is also one of the direct risk factors for coronary heart disease, in which the risk of central obesity is the greatest. 2, diabetes mellitus: diabetes mellitus is not only an independent risk factor for coronary heart disease, but also the most important risk factor. A large number of epidemiological data at home and abroad proved that the prevalence of coronary heart disease in patients with diabetes mellitus is much higher than that of non-diabetic patients with significantly higher and early onset, rapid progression of lesions and poor prognosis. At the same time, diabetic patients due to the existence of lipid abnormalities, insulin resistance, hypertension, coagulation and fibrinolytic system abnormalities, so it can also increase the risk of other risk factors. 3, smoking: smoking is not only an independent risk factor for coronary heart disease, but also has a synergistic effect with other risk factors. The younger the age of smoking, the higher the relative risk of coronary heart disease. Smoking can increase the risk of coronary artery spasm by more than four times, stop smoking can make coronary heart disease or peripheral vascular disease risk reduction by half. 4, metabolic syndrome: the main manifestations of metabolic syndrome are obesity, especially central obesity, impaired glucose tolerance / type 2 diabetes mellitus, abnormal lipid metabolism and hypertension. In recent years, some large-scale studies have found that metabolic syndrome is the most important risk factor for cardiovascular disease, which can increase the incidence of coronary heart disease and stroke by 3 times. 5, hyperlipidemia: primary and secondary prevention of coronary heart disease research agreed that increased cholesterol is atherosclerosis and coronary heart disease causative factors, coronary heart disease mortality rate with the increase in serum cholesterol and rising, cholesterol levels in the 5.2 mmol / L or more more obvious. Effective lipid-lowering therapy can prevent the occurrence and development of atherosclerotic lesions and reduce the morbidity and mortality of coronary heart disease. Lipid-lowering treatment can significantly improve the natural course of coronary heart disease, the significance of which is no less than coronary artery bypass grafting. 6, hypertension: hypertension has been confirmed that hypertension is one of the risk factors for coronary heart disease. Hypertension at least makes the risk of coronary heart disease occurs more than 2~3 times. At the same time, antihypertensive treatment can also make the morbidity and mortality of coronary heart disease significantly reduced. 7, sedentary lifestyle: do not love sports people coronary heart disease and the risk of death will double. Although with the rapid development of medical technology, thrombolytic therapy, coronary artery bypass grafting, coated stents and other new technologies can save the lives of more and more patients with coronary heart disease, but this is, after all, have no choice. Some studies have shown that comprehensive control of controllable risk factors can prevent more than 80% of acute coronary events. Therefore, the occurrence of coronary heart disease can be effectively controlled through the joint efforts of the whole society, especially to improve the understanding of coronary heart disease risk factors by high-risk groups, coronary heart disease patients and their families.