Permanent pacemakers are the primary treatment for irreversible pacing and conduction dysfunction of the heart from all causes. It is commonly used in patients with “symptomatic bradycardia”. Symptomatic bradycardia” refers to the lack of blood supply to the brain due to a slow ventricular rate, which can lead to dizziness, vertigo, blackouts and syncope (transient loss of consciousness); and the lack of blood supply to the body, which can lead to fatigue, reduced physical activity tolerance and congestive heart failure. The traditional treatment is to install single-chamber and double-chamber pacemakers. In recent years, Henan Chest Hospital has adopted double-chamber, triple-chamber and implantable cardiac automatic defibrillation pacemakers to relieve the suffering of patients with bradycardia, conduction block, tachycardia and heart failure, and to provide a new treatment pathway for patients with refractory heart failure and recurrent life-threatening ventricular tachycardia and ventricular fibrillation. In the early days, pacemakers were mainly used to treat slow arrhythmias, such as diseased sinus node syndrome (severe sinus bradycardia, sinus block, sinus rest, bradycardia-tachycardia syndrome), AV block (high or complete and second degree II AV block, persistent or intermittent three-branch intraventricular block or symptomatic two-branch intraventricular block), etc. With the development of pacing technology, the range of pacemaker therapy has been further expanded. With the development of pacing technology, the scope of pacemaker treatment has been further expanded. Currently, pacemakers for hypertrophic obstructive cardiomyopathy, three-chamber pacemakers for dilated myocardial congestive heart failure, and buried automatic cardioverter-defibrillators for intractable tachyarrhythmias all have excellent clinical efficacy. Pacemaker surgery has small incision, no pain, no chest opening, safe and reliable. Pacemaker installation not only reduces and avoids cardiac events (syncope, heart failure, sudden death), but also improves the quality of life of patients with arrhythmias.