Currently, the occurrence of myocardial ischemia is becoming younger and younger, and many young people around 30-40 years old can also have severe coronary atherosclerosis and even acute myocardial infarction. The reasons for this are as follows: first, patients may have a family history of genetic disease, close relatives such as parents, brothers, sisters, etc., with a history of coronary heart disease. Coronary heart disease has a tendency to run in families, which is evidence of a corresponding problem with their genes. Secondly, extremely irregular life, long-term staying up late, smoking and drinking can damage the inner lining of the heart vessels and lead to the formation of atheromatous plaques. Some patients have an unhealthy lifestyle and also show a history of drug addiction, and these drugs often cause damage to their intima as well. Therefore, younger patients, who are currently experiencing myocardial ischemia, are not underrepresented and need to be taken seriously.