Partial lead t-wave changes are a diagnostic of ECG and are categorized into hyperacute T-wave, low flat T-wave and T-wave inversion. 1. Hyperacute T-wave: it is mostly seen in acute myocardial ischemia, myocardial injury, hyperkalemia and other pathological conditions, in which t-wave hyperacute appears in the leads where the ischemic or injured myocardium is located as shown in ECG. 2. Low flat t-wave: it can be seen in mild myocardial ischemia, partial hypokalemia and other pathological conditions, and also in exertion, anxiety and other physiological conditions, the diagnostic significance of low flat t-wave is low. 3. T-wave inversion: refers to severe myocardial ischemia, especially epicardial ischemia. It is seen in transmural myocardial infarction. In conclusion, if partial T-wave changes occur, you should go to the regular hospital in time for examination and treatment under the guidance of the doctor.