Non-specific st-t abnormalities may suggest that the patient has coronary artery disease, myocardial ischemia and other diseases, but they may also appear in the normal population, and need to be combined with clinical symptoms and laboratory tests to accurately determine. 1. Normal population: Non-specific st-t abnormalities are a kind of electrocardiogram description, which may be manifested as ST-segment elevation or depression, or T-wave flattening, inversion, biphasic changes, etc. Some healthy people without organic heart disease may also have st-t abnormalities. Some healthy people without organic heart disease may also have non-specific st-t abnormalities due to unstable autonomic function. 2. Heart disease: non-specific st-t abnormality on the affected side may suggest that the patient has coronary artery disease, myocardial ischemia, infarction and other diseases, which need to be combined with clinical manifestations, such as whether there is chest pain, chest tightness, shortness of breath, dyspnea, sweating and other clinical symptoms, as well as cardiac ultrasound, coronary artery CTA and other laboratory tests, in order to accurately determine. It is recommended that patients with non-specific st-t abnormalities go to the hospital in time.