Abstract: High-frequency electrical knife isa kind of medical equipment which has high safety requirements. This article introduces the composition and working principle of high -frequency electrical knife, discusses the common adverse events and their causes of high -frequency electrical knife from equipment failure and damage to human body, and summarizes precautions in its use. Some advices are given on risk management, so as to improve the level of risk management, and then to ensure safe and effective use of high-frequency electrical knife.

Key words: high-frequency electrical knife, risk management, adverse events