Junctional tachycardia, also called supraventricular tachycardia, is called junctional because the onset of each heart rate is below the sinus node and above the ventricles. The main features of the ECG are the disappearance of P waves, QRS wave clusters that are not wide, and a heart rate that is greater than 100 beats, and most can be around 150 beats. Treatment of junctional tachycardia mainly includes radiofrequency ablation and drug therapy. Radiofrequency ablation is indicated for patients with frequent junctional tachycardia, which seriously affects the patient’s quality of life, and the cure rate of radiofrequency ablation is relatively high. If there are absolute contraindications to radiofrequency ablation, drug therapy is needed. The commonly used drugs for junctional tachycardia include verapamil hydrochloride and amiodarone hydrochloride, and verapamil or amiodarone hydrochloride can be used to restore the condition by sedation after each attack.