The advantage of pacemaker implantation is to correct arrhythmia; the disadvantage is that it may cause bleeding from the sac and inability to exercise strenuously. 1. Benefits: Pacing can be used to correct cardiac arrhythmia, such as sick sinus node syndrome, third-degree atrioventricular block, etc. When the heart rate is fast or slow, the pacemaker can ensure the lowest safe heart rate. The installation of pacemakers in heart failure patients can improve cardiac function, which improves the quality of survival and reduces the probability of patient death. 2. The bad side: pacemakers may cause bleeding from the sac, and if the sac causes an infection, the infection will cause bacteria to enter all parts of the body as the heart pumps blood, and even pose a threat to life. It also has some effects on patients’ daily life, such as the pacemaker’s battery has a life span, if there is no electricity, it should be replaced in time, no strenuous exercise, and at the same time, it is necessary to stay away from high-voltage wires or strong magnetic fields, because these can lead to the pacemaker’s work is affected. Installation of pacemakers is very widely used in clinical life and relatively safe. If there are no complications after three months of installation, there is basically no need to worry, but long-term prevention is needed. If there is any discomfort, it is recommended to go to the hospital immediately for treatment.