The key to controlling coronary heart disease is prevention. In the face of a large patient population and a high rate of sudden death, even the most advanced medical technology seems powerless. Experts from the World Health Organization say, “Unless community-based population control is greatly strengthened, mankind will not be able to control the spread of the world plague of cardiovascular disease.” Although coronary heart disease is a common and frequent disease in middle-aged and elderly people, the pathological basis of its atherosclerosis begins in the juvenile period, and the intervening decades provide an extremely valuable opportunity for prevention efforts. Therefore, we must vigorously strengthen primary prevention to prevent the occurrence of coronary atherosclerosis and eliminate coronary heart disease in the bud; pay attention to secondary prevention to improve the early detection rate of coronary heart disease in the whole community and strengthen treatment to prevent the development of the disease and strive for its reversal; we must not neglect tertiary prevention to control complications in a timely manner, improve the quality of patients’ survival and prolong their life span. Primary prevention of coronary heart disease, i.e., intervention of risk factors. Two prevention strategies can be used to prevent coronary heart disease, targeting the whole population and high-risk groups. The former is to reduce the average value of risk factors in the population by changing the lifestyle behavior habits, social structure and economic factors related to coronary heart disease risk factors in a certain population, region or country; the latter is to reduce the level of risk factors with one or more recognized (such as hypertension, smoking, etc.) with a clear causal relationship with coronary heart disease in order to effectively reduce the occurrence of coronary heart disease. However, the development of coronary heart disease is not limited to a small number of high-risk individuals, but occurs more often in those with numerous lower risk factors, so it is more important to emphasize population-wide interventions. Currently recognized risk factors for coronary heart disease include being male, middle-aged or older than 40 years old, having a family history of premature coronary heart disease, smoking (current smoking ≥10 cigarettes/day), hypertension, hyperlipidemia, hyperglycemia (including diabetes and abnormal glucose regulation), severe obesity (≥30% overweight), and a clear past history of cerebrovascular or peripheral vascular obstruction. Among them, hypertension, high cholesterol, hyperglycemia and smoking were considered as the four most significant risk factors for coronary heart disease. All risk factors, except gender, age and family history, can be prevented and treated. Warm tip: We should not be satisfied with the past model of “treating disease”, but pay attention to the concept of “preventing disease without disease”, and invest in health. Regular medical checkups can identify susceptibility factors from the apparently healthy population and take necessary preventive measures. Vulnerable factors or risk factors are the triggers for certain diseases. Does your body meet the standard of health or not? It must be examined by physicians, not just by your own feelings.