目的： 通过使用“七步洗手法”视频培训方法,增强普通市民对洗手的重视程度和依从性,提升洗手效果。方法： 2022年4月10日至2022年4月11日,入选20名普通市民,通过对“七步洗手法”视频培训前后,洗手方法、时间并利用ImageJ软件评价洗手效果。结果： “七步洗手法”平均耗时长于普通洗手法[（111.9±21.2） s比（27.1±6.2） s,P<0.001]。通过ImageJ计算“七步洗手法”后颜料面积占手套面积的比例平均值大于普通洗手法（99.9%±0.3%比94.1%±3.0%,P<0.001）。结论： 通过“七步洗手法”视频培训后,普通市民的洗手效果明显提升,有助于对新型冠状病毒肺炎疫情的防控。

Objective Through the use of “seven step washing technique” video traning method to attention and compliance of ordinary citizens to hand-washing can be enhanced, and improve the effect of the hand-washing. Methods From 10 April 2022 to 11 April 2022, 20 ordinary citizens were selected. Before and after the video training of “seven step washing technique”, the effect of hand washing was evaluated by ImageJ software. Results Time cost after seven-step hand-washing method group was significant longer than before[(111.9±21.2) s vs (27.1±6.2) s, P<0.001], as well as the areas of gloves dyed with color (99.9%±0.3% vs 94.1%±3.0%, P<0.001). Conclusions After watching the right seven-step hand-washing method, ordinary citizen could improve the quality for hand hygiene, which would contribute to the protection against COVID-19.