Early repolarization is an idiopathic electrocardiographic change characterized by distinct J waves and ST-segment arch-back down elevation, and is commonly seen in people without organic heart disease. The specific pathogenesis of early repolarization is unclear and may be related to the following factors: 1. inflammation and lesions of the myocardium. Many scholars believe that early repolarization occurs because some of the myocardium is not yet finished with the entire ventricular depolarization and repolarizes early, so it produces the ECG changes of early repolarization; 2. increased sympathetic excitability. healthy young and strong athletes, because of elevated sympathetic excitability and weakened vagus nerve, will The autonomic nerve dysfunction is also prone to early repolarization; 3, congenital genetic variants are also significantly related to early repolarization.