Coronary heart disease has a much broader definition and a single definition of heart attack, which is a type of coronary heart disease. There are various types of coronary heart disease, including chronic coronary artery disease and acute coronary syndromes. The former includes stable angina, ischemic cardiomyopathy, and occult coronary artery disease, while the latter includes unstable angina and myocardial infarction. Myocardial infarction is a type of coronary heart disease in which atherosclerosis of the coronary arteries occurs with severe stenosis or even occlusion, leading to myocardial infarction caused by necrosis of myocardial cells. Myocardial infarction can be categorized into ST-segment elevation myocardial infarction (subepicardial myocardial infarction or transmural myocardial infarction) and non-ST-segment elevation myocardial infarction (subendocardial myocardial infarction). If myocardial infarction or other types of coronary heart disease occurs, please consult a doctor in time and standardize the treatment under the doctor’s guidance.