Precautions after cardiac pacemaker installation: 1. rest in bed after surgery and observe whether the wound is bleeding; 2. avoid lying on the right side to prevent electrode dislodgement; 3. give antibiotic treatment to prevent local infection or endocarditis; 4. avoid entering strong electromagnetic fields, such as aircraft security checks, etc., keep cell phones as far away from the surgical position as possible, and try to keep cell phones more than 15 cm away from the pacemaker when answering the phone; 5. the next day after surgery, perform Pacemaker program control should be performed the day after surgery to observe the parameters of the pacemaker, whether there is hematoma in the pacemaker bag, and whether the color of the local bag is darkened; 6. Depending on the condition of the patient, pacemaker program control should be performed in the hospital 3-6 months after surgery, and after that, pacemaker program control should be performed in the hospital regularly every year to check the working status and power of the pacemaker, and if the power is insufficient, it should be replaced in the hospital in time.