The diagnosis of Brugada syndrome is as follows: 1. There must be polymorphic ventricular tachycardia or ventricular fibrillation occurring in the clinic and cardiac arrest due to arrhythmia; 2. The electrocardiogram has a Brugada wave manifestation of type I, i.e., vault-like changes and ST segment elevation in the right anterior thoracic lead >0.2 mv. In addition, the treatment of Brugada syndrome includes non-pharmacological and pharmacological treatments. Non-pharmacological treatments include ACD pacemaker, radiofrequency ablation, cryosurgery, etc. Isoproterenol, cilostazol, and quinidine can be used in pharmacological treatment, but propafenone, flecainide, and propyzamide are contraindicated, and β-blockers and amiodarone are relatively contraindicated, which can prolong the QT interval and increase the probability of polymorphic ventricular tachycardia.