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目的:了解我国MSM的HIV检测率尤其是HIV自我检测（自检）率的变化趋势，初步评估HIV自检在扩大MSM的HIV检测方面的作用。方法:通过Blued男性社交平台在全国范围内招募研究对象，调查内容包括社会人口学特征、性行为、既往HIV检测与自检等，并对历年数据进行趋势性分析。结果:2013-2016、2018年，分别招募1 342、1 424、1 173、2 105、699名MSM。2013年研究对象年龄（30.6±6.6）岁，之后年份的研究对象年龄较2013年更为年轻化。2013年MSM的HIV检测率为60.0%（805/1 342），并于2018年增至77.3%（540/699），2013-2016年与2018年MSM的HIV检测率呈现增长趋势（趋势检验n Z=19.3，n P<0.001）。2013、2018年MSM的HIV自检率分别为19.3%（259/1 342）和58.1%（406/699），2018年是2013年的3倍（n χn 2=237.5，n P<0.001），在HIV检测者中HIV自检比例由2013年的32.2%（259/805）增至2018年的75.2%（406/540）（趋势检验n Z=14.3，n P<0.001）。n 结论:基于男性社交平台的MSM的HIV检测率、HIV自检率、HIV检测者中HIV自检比例，2013-2016、2018年均呈明显上升趋势。提示HIV自检可提高MSM的HIV检测覆盖面，对我国MSM艾滋病防控有重大公共卫生意义。“,”Objective:To understand the changing trends of HIV testing rates, with a focus on HIV self-testing, and to evaluate the impact of HIV self-testing on expanding HIV testing among MSM in China in past few years.Methods:MSM were recruited online nationwide via a gay social networking app (Blued) from 2013 to 2016 and 2018. The survey collected information about socio-demographic backgrounds, sexual behaviors, and prior HIV testing experiences, including HIV self-testing. Trend analyses were conducted.Results:Respectively, 1 342, 1 424, 1 173, 2 105 and 699 MSM were recruited nationwide from 2013 to 2016, and in 2018. The mean age was (30.6±6.6)years in 2013 and showed a decreasing trend afterwards. The HIV testing rate was 60.0% (805/1 342) in 2013 and there was a rising trend from 2013 to 2016, and 2018 (trend n Z =19.3, n P <0.001), reaching a peak at 77.3% (540/699) in 2018. Further, the HIV self-testing rate increased from 19.3% (259/1 342) in 2013 to 58.1% (406/699) in 2018 ( n χ2=237.5, n P <0.001). The proportion of MSM who had HIV self-testing among prior HIV testers significantly increased from 32.2% (259/805) to 75.2% (406/540) during the study period (trend n Z =14.3, n P <0.001).n Conclusions:The HIV testing rate, HIV self-testing rate and proportion of men who had HIV self-testing among former HIV testers among web-based Chinese MSM showed substantial increases from 2013 to 2016,and 2018. This suggests that HIV self-testing may have a significant effect on the expansion of HIV testing coverage in MSM, and has important public health implications for HIV/AIDS prevention in China.