Coronary heart disease, tumor and cerebrovascular disease are called the “three major killers” of human health. The mechanism of coronary heart disease is that the human heart is like the size of one’s fist, with three blood vessels distributed on the surface, like a cap over the top, called coronary arteries, the heart relies on these three blood vessels for blood supply, such as coronary artery lining damage, resulting in plaque, resulting in lumen narrowing, causing ischemic symptoms of the heart, that is, coronary heart disease, complete occlusion of blood vessels is myocardial infarction. The human heart is like a car engine, coronary heart disease is like a blocked oil circuit of the car, the engine oil circuit blockage is easy to stall, coronary heart disease can lead to sudden death. Currently, the incidence of coronary heart disease is growing at a rate of 20% per year, and is getting younger every year. The main reason is that in recent years people’s life rhythm accelerated, work pressure is too much, irregular life, diet is not scientific, excessive smoking and alcohol, etc., resulting in hypertension, hyperlipidemia, diabetes and other diseases, and finally lead to coronary heart disease. At present, the number of people over 30 years old with high blood pressure, hypertension and hyperglycemia is not small. The damage of “three highs” to the body is a slow, gradually aggravated insidious process. Patients may not have symptoms or even any discomfort, but they may have the possibility of coronary heart disease. The above three patients have the same common features of white-collar work, socializing, smoking, alcoholism, staying up late, irregular life and abdominal obesity. 2, ideologically do not pay attention to, self-conscious young, overspending the body, there are diseases do not seek medical treatment to take medication, two of them have a history of hypertension for many years, hyperlipidemia, one of them hyperlipidemia, abdominal obesity and usually long-term computer work. Due to busy work and insufficient attention, they did not actively and effectively control lipids and blood pressure, and during hospitalization, it was found that some glycated hemoglobin exceeded 10%, and there were also dyslipidemia, fatty liver, high uric acid and other disorders, which are typical of metabolic syndrome. 3, non-specialist physicians are prone to misdiagnosis. 4, the lesions in young people are mostly the largest and most important anterior descending lesions in the coronary arteries, which are prone to sudden death, so abroad, the coronary anterior descending vessels are called “widow’s blood vessels”, suggesting that young and middle-aged people have more incidences and the condition is more dangerous. Preventive measures: a healthy lifestyle is the key. Control of high blood pressure, hypertension, diabetes and smoking, the “four risk factors” is the primary way to prevent coronary heart disease, especially lipids should be adjusted. We need to maintain a low-fat and low-salt diet, exercise in moderation, quit smoking and drinking to control body weight, regulate emotions, maintain physical and mental balance and a good state of mind, and adhere to sports to prevent obesity. Diagnosis and treatment: The main symptoms of patients are chest pain, chest tightness, breath-holding sensation, cold sweat, etc. The symptoms will be more serious especially when going up the stairs and in labor situations. Seek medical attention after the above symptoms appear, first check the basic tests such as ECG, and further perform coronary CT or coronary angiography to make a clear diagnosis.