The installation of a pacemaker is relatively safe, but sometimes there are hazards. The main hazard of a pacemaker is mainly for particularly thin patients, which may cause the capsule bag to wear out after a long time or directly wear out the pacemaker, resulting in the exposure of the pacemaker, because the pacemaker is implanted near the shoulder, and individual patients may feel local nerve damage, resulting in a possible local limitation of the patient’s shoulder when doing exercises. After three months of pacemaker installation if there are no complications, there is basically nothing to worry about and long-term prevention is needed. Care must be taken to control lung infections or infections elsewhere, otherwise bacteria will flow down the bloodstream to the heart after entering the bloodstream and may form acute endocarditis, which can cause a greater risk.