Objective: Explore the feasibility of POL intervention based on life skills in young students at high-risk of AIDS, and to provide reference for POL intervention. Methods: Nine potential POLs were recruited from young students at high risk of AIDS in Xi’an, and received life-skill-based interventions from May to October in 2017. A unified approach was adopted before the intervention. The effect of intervention was evaluated at 1 month and 3 months after the intervention. Results: The difference in POLs peer status and psychosocial ability scores was not significant after the intervention. The scores of persistence efficacy dimension of condom use efficacy before, 1-month and 3-month after the intervention were (10.56±1.88)(11.11±2.21)(12.89±2.09)(F=6.84, P<0.05) respectively. No significant changes were found in AIDS-related knowledge and behavior before and after the intervention. POL has increased from 108 students before intervention to 216 publicity coverage after three months intervention, however, the difference was not statistically significant. Feasibility analysis of the POL intervention showed that 8 of the POLs considered to be "very useful". Conclusion Life skill-based POL intervention for young students at high-risk of AIDS has a wide coverage and reasonable acceptance, as well as condom use adherence. The long-term effectiveness still needs to be verified.

Objective: To understand HIV knowledge and high-risk sexual behaviors among men who have sex with men (MSM) in the HIV-infected students’ social network, and to provide a scentific reference of making targeted and effective measures. Methods: A mixed recruitment method of snowball sampling and respondent driven sampling was used to recruit HIV-infected students with the help of local CDC in Harbin, Tianjin, Xi’an and Chongqing, with demographic information, sexual behaviors and HIV knowledge collected via questionnaire survey. Results: A total of 549 valid questionnaires were analyzed. Among them, the awareness rate of "Guo Ba Tiao" was 90.7% and the awareness rate of "Qing Ba Tiao" was 89.4%, the consistent condom use rate was 59.4%. Among those who were aware of HIV, 40.8% exhibit the mismatch between HIV knowledge and condom use behavior, which was significantly associated with number and types of sex partners. Those who had 1-3 regular male sex partners (1 partner: aOR=2.48, 95%CI=1.61-3.82; 2-3 partners: aOR=2.45，95%CI=1.44-4.15),or 1-3 causal male sex partners (1 partner: a-OR=1.74, 95%CI=1.10-2.77; 2-3 partners: aOR=2.15, 95%CI=1.34-3.46) were more likely for this mismatch. Those who had more than one commercial male sex partner(aOR=3.35, 95%CI=1.15-9.80), or more than one regular female sex partner (aOR=2.49, 95%CI=1.17-5.28), or more than one casual female sex partner(OR=2.80, 95%CI=1.01-7.71), the risk for this mismatch was also high. Conclusion The mismatch between HIV knowledge and condom use behavior among MSM students from the social network of young students living with HIV/AIDS is severe. It is necessary to carry out tailored HIV intervention to reduce the transmission of HIV among those people.