T-wave abnormalities consider the presence of hazards such as hypokalemia, myocardial infarction, pericarditis, or they may be physiologic changes. 1. Hypokalemia: In patients with hypokalemia, T-wave abnormality may appear in ECG examination. It is recommended to correct the water electrolyte metabolism disorder in time, and potassium supplementation is needed when necessary. 2. Myocardial infarction: myocardial infarction may also show T-wave abnormality, it is recommended to use nitroglycerin, nifedipine and other medicines under the guidance of doctor for treatment, and low blood oxygen level, oxygen inhalation can be considered. 3. Pericarditis: viral infection, tumor metastasis and so on can cause pericarditis and t-wave abnormality, it is recommended to use appropriate methods of treatment under the guidance of doctors. 4. Physiological factors: physiological T-wave changes may also occur after exercise, drinking coffee for a long time, staying up late, emotional excitement, etc. It is recommended to have ECG examination again in a stable state. There are many factors causing T-wave abnormality, it is recommended to go to the hospital in time to find out the cause and treat it in time.