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目的:研究经首次电子肠镜检查发现结直肠息肉患者，第二次行电子肠镜下手术时，更换操作者对结直肠息肉术中检出率的影响。方法:选择2016年6月至2019年6月在解放军陆军第九四六医院接受电子肠镜检查发现结直肠息肉、并在3个月内来院行内镜下治疗的患者，首次电子肠镜检查和复查由不同的两位医生完成。记录患者两次电子肠镜检查的情况并进行统计分析。结果:首次电子肠镜检查发现结直肠息肉患者576例，其中3个月内来院治疗的患者且符合纳入条件者423例，由同一操作者复查新检出息肉人数的检出率为22.7%（96/423），更换操作者后为24.3%（103/423），两者比较差异无统计学意义（n P>0.05）。同一操作者和更换操作者新检出息肉的检出率分别为20.8%（220/1 059）、25.9%（294/1 133），其中新检出直径≤ 5 mm息肉占新检出息肉分别为73.6%（162/220）、82.0%（241/294），新检出扁平型息肉占新检出息肉分别为71.8%（158/220）、79.9%（235/294），差异均有统计学意义（n P0.05）。n 结论:电子肠镜检查出结直肠息肉的患者，手术时更换操作者，术中能更多的检查出漏诊的息肉，特别是直径≤ 5 mm的扁平息肉；建议结直肠息肉患者手术时更换操作者，提高检出率，降低漏诊率。“,”Objective:To study the effect of changing operator on the detection rate of colorectal polyps during surgery in patients who had been diagnosed with colorectal polyps by electronic colonoscopy for the first time.Methods:From June 2016 to June 2019, the patients who had been diagnosed with colorectal polyps by electronic colonoscopy for the first time, they were performed by electronic colonoscopy for the second time after 3 months by 5 doctors in the No.946 Hospital of PLA who had engaged in endoscopic work longer and been with rich experience. The results of the electronic colonoscopy were recorded and compared.Results:Fived hundred and seventy-six patients were found have colorectal polyps through electronic colonoscopy for the first time. Among them, 423 patients came to the hospital within 3 months and were eligibled for the research. The detection rate of newly detected polyps by the same operator was 22.7%(96/423), after changing the operator, the detection rate became 24.3% (103/423), but there was no significant difference (n P>0.05). The detection rates of newly detected polyps were respectively 20.8% (220/1 059) and 25.9%(294/1 133), the proportion of newly detected polyps with diameter ≤ 5 mm was respectively 73.6%(162/220) and 82.0%(241/294), the ratio of flat polyps to total newly detected polyps was 71.8%(158/220) and 79.9%(235/294), and there were significant differences (n P0.05).n Conclusions:For patients with colorectal polyps detected by electronic colonoscopy, the operator should be changed during surgery, so that more missed polyps can be detected during surgery, especially flat polyps with diameter ≤ 5 mm. The operator should be changed to improve the detection rate and reduce the probability of missed diagnosis.