Atrial flutter is a fast and coordinated contraction of the atria caused when the frequency of the atrial ectopic pacing point is between 250-350 beats per minute and regular. Treatment of atrial flutter: First, to clarify the cause of atrial flutter, etiologic treatment. Second, for patients with organic heart disease, especially combined with cardiac insufficiency, digitalis treatment should be preferred to control the ventricular rate. Third, for patients with atrial flutter, amiodarone is used to turn the heart rate to the patient, and synchronized direct current resuscitation can also be used, the therapeutic effect is more obvious. Fourth, for atrial flutter that is difficult to control with medication, radiofrequency ablation can be given to the patient. Fifth, for atrial flutter cured patients, can take amiodarone to prevent recurrence. Sixth, for patients with persistent atrial flutter and cardiac insufficiency or organic lesions of the heart, it is recommended to take long-term anticoagulant drugs to prevent thrombosis.