Early repolarization is not caused by overexertion, and the cause may be related to family genetics and autonomic dysfunction. In cardiovascular medicine, early repolarization usually refers to an electrocardiographic manifestation, which may appear ST-segment elevation, and the cause of formation may be related to premature repolarization, and there is no obvious correlation with overexertion. Early repolarization may be related to family inheritance, and some patients have abnormal ion channels due to genetic abnormalities, leading to early repolarization. In addition, autonomic dysfunction in individual patients may lead to sympathetic excitation, which may also affect ion channels, leading to early repolarization. Most early repolarizations do not require special treatment, but a few patients may suffer from coronary artery disease, and patients with symptoms should go to the hospital in time and be given treatment under the guidance of a physician.