目標：探討台灣女同志在最近一年內進行陰道指交時使用指險套之盛行率，及其使用之相關因素，以提供實證資料作為女同志性健康之衛生教育介入參考。方法：以現居台灣、年滿18歲以上、最近一年內曾與女性進行陰道指交之女同志為研究對象，利用網路問卷的方式，於各大女同志BBS網站進行量性資料收集，有效樣本為397位。結果：本研究發現，僅18.9%女同志在過去一年進行陰道指交時會使用指險套。平均每月收入超過四萬元、過去一年曾在陰道指交行為上有多重女性性伴侶、認為指險套會降低快感、認為其使用很麻煩及對其購買管道不熟悉者，較不可能在過去一年陰道指交時使用指險套；而對於性傳染病自覺罹患性高者，則較可能在過去一年陰道指交時使用指險套。此外，10.8%（43位）女同志曾罹患性傳染病，其中以細菌性陰道炎之盛行率最高（5.3%）。在曾罹患性傳染病之女同志中，44.2%未曾與男性發生過性行為。結論：過去台灣女同志常被認為是性病的低危險群，因此其性健康亦較常被忽視。然而本研究結果顯示，即使從未與男性發生性行為之女同志，仍有罹患性傳染病之風險。再者，女同志之性行為非常多元，其與男同志以及異性戀之性行為亦有差異。在政府大力倡導性別平等之趨勢下，不應忽視性少數族群的健康，並宜儘速制訂相關政策，以促進健康上的性別平等。

Objectives: To explore the prevalence of and factors associated with Findom use during vaginal fingering in the previous year among women who have sex with women (WSW) in Taiwan, and to provide empirical data that help inform future educational interventions to improve the sexual health of WSW. Methods: Self-administered survey data from 397 WSW were collected via the Bulletin Board System in several forums frequented by most Taiwanese WSW. WSW who were living in Taiwan and at least 18 years old at the time of the survey, and who had vaginal fingering in previous year, were included in the present study. Results: Only 18.9% of the study participants reported Findom use during vaginal fingering in the previous year. Those who had a monthly income of more than NT$40.000, who had multiple female vaginal fingering partners in the previous year, who believed that Findom use would reduce sexual pleasure and was inconvenient, and who were unfamiliar with its venue for purchase, were less likely to have reported fandom use. Those who perceived greater susceptibility to sexually transmitted infections (STIs) were more likely to have reported Findom use. Forty-three participants (10.8%) had contracted STIs, and bacterial vaginosis was the most common STI, with a prevalence estimate of 5.3%. Of those who had contracted STIs, 44.2% never had sex with men. Conclusions: WSW in Taiwan have often been regarded as a low-risk group for STIs, and hence, their sexual health has often been neglected; however, findings of this study showed that even WSW who never had sex with men were still at risk for STIs. In addition, the sexual practices among WSW are diverse and different from those among gays and heterosexuals. Therefore, as the Taiwan government strives for gender equality, the health of sexual minorities should not be ignored, and related policies are urgently needed to promote gender equality in health.