There are many types of arrhythmia, such as sinus bradycardia, paroxysmal supraventricular tachycardia, atrial fibrillation, ventricular tachycardia, etc. Depending on the condition of the heart, you can choose the drugs such as Lidocaine, Propafenone, Amiodarone, Verapamil, Metoprolol and so on. 1. Sinus bradycardia: sinus bradycardia is asymptomatic and usually requires no special treatment. Atropine or isoproterenol can be used when the heart rate slows down and causes symptoms of insufficient blood flow, such as dizziness and fatigue, and sick sinus node syndrome can be diagnosed when there are symptoms of obvious cerebral insufficiency of blood supply, and it is recommended to implant a permanent pacemaker. 2. Paroxysmal supraventricular tachycardia: Adenosine can be used to lower the heart rate during paroxysmal supraventricular tachycardia episodes, and when adenosine is ineffective, verapamil can be used. If adenosine is not effective, verapamil can be used. Metoprolol and propafenone can also be used. 3. Atrial fibrillation: The treatment principles for patients with atrial fibrillation include controlling the ventricular rate, restoring sinus rhythm and preventing blood clots. To restore sinus rhythm, propafenone and amiodarone are commonly used; to control ventricular rate, metoprolol, verapamil and digitalis are commonly used; to prevent thrombosis, warfarin and rivaroxaban are commonly used. There are many types of arrhythmia, the condition is also relatively complex, the use of different drugs for different conditions is also different, it is recommended that patients go to the hospital as soon as possible, please ask a professional doctor to formulate a medication program according to the condition, do not recommend self-medication in order to avoid causing adverse consequences.