Recurrent tachycardia needs to be treated by identifying the cause first. Tachycardia is commonly characterized by supraventricular tachycardia or ventricular tachycardia. It is recommended to go to the hospital for diagnosis of tachycardia. 1. Supraventricular tachycardia: it may be caused by organic diseases, metabolic disorders, digitalis intoxication and so on. Acute episodes can be treated with amiodarone, propafenone, verapamil and other drugs. It can also be treated with electrical cardioversion and catheter ablation. 2. Ventricular tachycardia: most of them are caused by coronary artery disease, primary cardiomyopathy, mitral valve prolapse and so on. Clinical hemodynamic instability should be immediately electrically reversed. If the clinical hemodynamics is still stable, the first choice of antiarrhythmic drugs such as lidocaine, amiodarone, etc., ineffective and then choose the electric resuscitation. 3. Sinus tachycardia: generally no treatment is needed, but symptomatic patients should eliminate triggers and actively treat the primary disease. If necessary, β-blockers, ivabradine, non-dihydropyridine calcium channel blockers can be given for treatment. There are many reasons for the recurrence of tachycardia, and it is necessary to clarify the cause of the disease and control the primary disease. It is recommended to go to the hospital in time, to clarify the cause of the disease, and to treat the cause of the disease.