Treatment: 1, synchronous direct current electric resuscitation for the preexcitation syndrome combined with atrial flutter or with heart failure, cardiogenic shock need to be urgently resuscitated, 1:1 atrioventricular conduction ventricular rate of 200 beats / min or more, should be preferred to electrical conversion, generally with 50-100Ws, success rate of 100%. 2, the ventricular rate is too fast can be given capillarisin C (cidilan) intravenous injection, can first become atrial fibrillation, and then convert the sinus rhythm. 3, amiodarone intravenous or oral, can also achieve good results. 4.Propafenone (cardioplegia), quinidine, propiamine (diisopropiamine), sotalol, flecainide, etc. can revert atrial flutter. 5, individual chronic atrial flutter can not be restored by the above methods, can be controlled by oral digitalis or verapamil (isoptin) (except heart failure). 6. Transcatheter radiofrequency ablation is effective and can cure most patients.