After the pacemaker is installed, you should pay attention to the following aspects: 1. From the patient’s point of view, you should pay attention to whether there is redness, swelling, pus flow, or infection in the pacemaker’s bag, and contact the medical staff in a timely manner. The upper limb on which the pacemaker is installed should be protected from large movements as much as possible, including sleeping, and usually the pacemaker is placed on the right upper limb, so avoid lying on the right side for at least three months. 2. Pacemaker battery depletion, pacing parameters, and avoidance of strong magnetic fields. Nowadays, most pacemakers are subject to magnetic field interference due to the high level of medical care, and there are pacemakers that can be used for MRI, so these are the things that you should inform your patients about as a physician. Pacemakers must be used in many ways, and all aspects must be taken into account, including the care of the family. Patients and family members should actively and regularly follow up with the pacemaker clinic.