The electrosurgical unit (ESU) is a kind of generally-used but high-risk equipment. Our hospital implemented quality control of ESU in 2015 in line with the requirements of Beijing Municipal Administration of Hospital. FLUKE QA-ES II high frequency electrosurgical detector and ESA 615 electrical safety analyzer were used to perform the quality inspection of the Model ERBE high frequency electric knife and Force frequency electric knife from multiple aspects, including high frequency leakage current detection, output power detection, wave crest factor detection, etc.. According to the test, 90% of ESU in our hospital met the standards. Eventually, the precautions and problems during the test were analyzed in this paper.