Postoperative care of pacemaker installation should pay attention to environment, psychology, activity and diet. 1. Environment: First of all, we should make sure that the place is quiet so that the patient can get enough rest, meanwhile, we should make a comprehensive ventilation of the indoor and outdoor air, maintain the temperature and humidity in a comfortable range, in addition, stay away from high-voltage magnetic fields, and don’t go out as much as possible when it rains or there is thunder and lightning. 2. Psychology: patients may have excessive mental tension after surgery, fearing that the pacemaker will suddenly stop, at this time, timely communication should be carried out to alleviate their anxiety and tension. 3. Activity: After the pacemaker is installed, the patient should avoid the position of the electrode of the pacemaker changing, so he should stay in bed for 3 days after the operation and have sufficient rest. In order to avoid the electrode position deviation or pacemaker bag bleeding, the side lying position should not be used. Patients with simple pacemaker replacement can get out of bed 6~8 hours after the operation, but attention should be paid to the protection of incision. 4. Diet: try to choose nutritious food, diet should pay attention to keep light, small and frequent meals, eat less greasy and spicy food, should choose more vegetables and fruits, keep the bowel movement, prevent constipation, avoid abdominal pressure increase. Specific diagnosis and treatment need to follow the doctor’s advice.