There are many causes of arrhythmia tachycardia, the most common are as follows: i. Rapid atrial fibrillation, patients often manifest as sudden palpitations, panic, chest tightness, shortness of breath, check the electrocardiogram can confirm the diagnosis, patients with rapid atrial fibrillation should control the ventricular rate, and at the same time to re-clot, if not re-clot can use anticoagulation therapy to prevent cerebral thrombosis. Second, paroxysmal supraventricular tachycardia, also manifested as a significantly faster heartbeat, for sudden onset, sudden stop, to perform radiofrequency ablation surgery, the success rate of up to 95% or more.