If the heart suddenly jerks and then beats violently, tachyarrhythmia should be considered, and the type of arrhythmia and its etiology should be clarified, and an appropriate treatment plan should be chosen. Tachyarrhythmias mainly include sinus tachycardia, atrial flutter, atrial fibrillation, paroxysmal supraventricular tachycardia and so on. The principle of treatment is no obvious symptoms, can not be dealt with temporarily; obvious symptoms (such as panic, dizziness, fatigue, etc.) the use of drug therapy; if hemodynamic disorders, should be immediately after the DC resuscitation; In addition, if there is an indication, the feasibility of radiofrequency ablation. 1. Sinus tachycardia: it can be caused by anemia, hyperthyroidism, heart failure, smoking, drinking tea or coffee. Treatment includes removing the causative factors, treating the primary disease, and choosing β-blockers (e.g. metoprolol, propranolol, etc.) and non-dihydropyridine calcium channel blockers (e.g. verapamil, diltiazem, etc.). 2. Atrial flutter/atrial fibrillation: most common in organic heart disease, usually treated with anticoagulation (warfarin, etc.) and ventricular rate control (metoprolol, diltiazem, digitalis, etc.). 3. Paroxysmal supraventricular tachycardia: patients often do not have organic heart disease, can be used to stimulate the vagus nerve (such as cold water stimulation, pharyngeal stimulation induced nausea, etc.) to terminate the attack, the drug of choice adenosine. 4. Ventricular tachycardia / ventricular fibrillation: most common in coronary artery disease, such patients are often accompanied by serious hemodynamic disorders, should be timely electrical cardioversion, the drug of choice is lidocaine, metoprolol, amiodarone and so on. All of the above drugs should be taken under the guidance of a specialist.