Cardiac electrophysiological examination has certain risks because it is performed by puncturing a blood vessel, which may cause bleeding of the blood vessel at the puncture site, induce arrhythmia during the operation, cause endothelial damage, etc. However, with the development of medical technology, the procedure is now mature, and the chances of occurrence of the above risks are getting lower and lower. Cardiac physiologic examination is mainly used to clarify the type of arrhythmia, the source of abnormal electrical signals and conduction pathways, and is a minimally invasive procedure performed by puncturing blood vessels. . All operations carry a certain degree of risk, with the possibility of causing bleeding from the blood vessels at the puncture site, leading to a local hematoma; the possibility of damage to the endocardium due to improper operation during the puncture process; and the possibility of inducing serious arrhythmias. However, with the maturity of the technology and the application of various advanced instruments and equipment, the chances of surgical risks are gradually decreasing, and the benefits of electrophysiological examinations for patients with cardiac arrhythmias are significantly higher than their risks. If cardiac electrophysiology examination is needed, it is recommended to actively cooperate with the doctor’s treatment. The doctor will inform the patient of the various possible risks before the procedure, and even if the above complications occur, most of them can be minimized through treatment.