If a patient has an elevated T wave during an electrocardiogram, it is possible that an acute myocardial infarction has occurred, and an abnormally high T wave may occur during the hyperacute phase of an acute myocardial infarction. In addition, some patients may have hyperkalemia, which may also result in T-wave elevation. If patients want to further clarify the diagnosis, it is recommended to also combine the actual clinical symptoms and relevant laboratory tests. It is recommended that patients can have myocardial enzymes and serum ions examined, and if necessary, coronary CT or coronary angiography can be done to help further clarify the diagnosis, because some people, although in the hyperacute phase of acute myocardial infarction, may have symptoms of precordial discomfort that are not particularly typical, especially those who have been taking oral painkillers for a long time or have diabetes, and may not be very sensitive to pain, so they must Further examination should be done to clarify the diagnosis.