The purposes of this research were to assess female populations’ literacy of sexual violence, to examine the prevalence of sexual violence before the age of 18 among them, and to investigate their scores on depression and anxiety scales between two groups with and without experience of pre-adulthood sexual violence. Further, this research investigated whether the participants developed post-traumatic stress disorder (PTSD) among the group with experience of pre-adulthood sexual violence. This quantitative research was based on an online survey. It was created on Google Form and informed consent from participants was obtained. Through social media platforms, a total of 240 female respondents aged between 18-30 participated from the general population of Mongolia. After excluding missing data, 234 respondents were included in the analysis. Among all participants, 51.7% reported having sexual violence experience before the age of 18, while 48.3% of the participants reported not experiencing sexual violence. Participants without pre-adulthood sexual violence experience group did not have significantly higher literacy of sexual violence than those with pre-adulthood sexual violence experience group. Participants with pre-adulthood sexual violence experience group had significantly higher levels of anxiety and depression than those without pre-adulthood sexual violence experience group., PTSD levels. The findings of this study provided Mongolia’s policymakers, and mental health practitioners with a much-needed knowledge base for developing a holistic framework of sexual violence prevention, intervention, and postvention program. The Mongolian government and policymakers should prevent people from becoming perpetrators or survivors of sexual violence.