High troponin is not yet considered myocardial infarction, and myocardial infarction is judged by combining three indicators. The first is the presence of symptoms, that is, the presence of clinical symptoms of myocardial infarction, such as persistent chest pain and profuse sweating. The second is to look at the electrocardiogram changes, whether there is an electrocardiogram of myocardial infarction. The third is to look at troponin. If two of these three are positive, the condition can be considered a myocardial infarction. If the troponin is elevated alone, myocardial infarction cannot be diagnosed because the cause of troponin elevation is not only myocardial infarction, such as viral myocarditis, acute severe viral myocarditis, which can also lead to troponin elevation, and in this case, it cannot be considered myocardial infarction. Therefore, the diagnosis of myocardial infarction cannot be 100% based on elevated troponin alone, but must be combined with other conditions, especially the patient’s symptoms and electrocardiographic changes. Of course, for the diagnosis of myocardial infarction, the highest standard is coronary angiography, which can see whether the blood vessels are blocked, so that the diagnosis of myocardial infarction can be confirmed.