HIV/AIDS cases among female sex workers in Buleleng regency was suspected related to the increasing number of indirect sex workers. Coffee sellers named dakocan who are not only selling coffee, or various food but also providing alcoholic drink and sexual service. This study aimed to provide an overview of high-risk sexual behavior among dakocan and its determinants. The study applied a mixed-method design. First of all, the survey was conducted among 64 respondents. 14 confirmed that they were also providing sexual services who were further interviewed more deeply to know the sexual behavior related to high risk of HIV transmission. Quantitative analysis the respondents were having poor knowledge regarding HIV/AIDS (59.38%) and not a serious disease (62,50%) and 59.38 %having a low perception ,as much as 67,19% respondents perceived that they are having a high-risk variables that are significant low perception toward benefits of using condoms (95%CI=0.002-0.759; p=0.032), experience in undergoing HIV/AIDS examination (95%CI=1.039-182.903; p=0.047). These findings are supported by the qualitative interview. The government program is required to change dakocan behavior by providing preventive services including more campaigns in the importance of condoms.