Abnormal discharge of pacemaker may be caused by wrong implantation position of pacemaker electrodes or detachment of pacemaker electrodes on the one hand, and poor or excessive sensing of pacemaker on the other hand. 1. Wrong implantation position of electrodes: If the implantation position of pacemaker is wrong after the operation, there may be local abnormal discharge, such as abnormal beating of subcutaneous tissues and muscles; 2. 2. Pacemaker electrode detachment: It is also possible that the original correctly positioned pacemaker electrode is detached from its original position and appears in other positions, which can also cause abnormal discharges. 3. Pacemaker perception problem: When the pacemaker has excessive or poor perception, it may also cause abnormal discharge, for example, excessive pacemaker perception can cause electrical activity due to other muscle contractions, resulting in abnormal discharge of the pacemaker. When abnormal pacemaker discharge occurs, it is still recommended that the patient go to the programmed clinic for appropriate examination to avoid adverse consequences.