Early cardiac repolarization is mainly manifested as horizontal or downward sloping elevation of J point and ST segment on ECG, mostly seen in young people or athletes, most of them will gradually normalize with age, some patients show chest pain and chest tightness, this condition should be distinguished from acute myocardial infarction. Most of the early cardiac repolarization belongs to a benign disease process, but some patients with early cardiac repolarization may have severe ventricular tachycardia, ventricular fibrillation and other arrhythmias, which are related to sympathetic excitation or genetic factors, etc. Treatment is as follows: 1. if the patient has no special symptoms, only regular observation is needed, no special treatment is required; 2. if the patient has recurrent chest pain and panic, symptomatic treatment with drugs such as nitroglycerin can be used If the patient has had malignant arrhythmias, it may be necessary to improve the dynamic electrocardiogram, cardiac electrophysiology and other examinations.