Indirect pathways of functional social support with depressive and anxiety symptoms through psychological capital’s components. FSS, functional social support. Significant mediating roles of hope and optimism on the association between FSS and depressive symptoms were revealed. In addition, self-efficacy significantly mediated the association between FSS and anxiety symptoms. Control variables (included, but not pictured) are age, gender, education, monthly income, cART treatment, and months since HIV-seropositive. *p < 0.05, **p < 0.01.