Abstract: Ebstein's anomaly is a kind of congenital heart disease with part or all leaflets of tricuspid valve not normally attaching to the tricuspid annulus in the normal position,but spirally shifting downward and abnormally attaching to the right ventricular wall.Ebstein's anomaly patients often suffer from arrhythmias,featured by paroxysmal supraventricular tachycardia, atrial fibrillation and atrial flutter,etc.The occurrence of