IntroductionExtant literature has demonstrated significant associations between HIV-related stress, social support, and depression among PLWH. However, little research has been conducted on the changes in such associations over time. Our study aims to explore the longitudinal relationship between HIV-related stress, social support, and depression among PLWH over five years.Methods320 PLWH were recruited from Changsha Center for Disease Control and Prevention (CDC), Hunan Province, China. They were assessed for depressive symptoms, HIV-related stress, and social support within 1 month of HIV diagnosis, 1 year after diagnosis, and five years after diagnosis, respectively. Relationships between these variables were examined using a fixed effect model.ResultThe prevalence of depressive symptoms within the first month, first year, and fifth years of HIV diagnosis was 35, 12.2, and 14.7%, respectively. Emotional stress (β: 0.730, 95% CI: 0.648, 0.811), social stress (β: 0.066, 95% CI: 0.010, 0.123), instrumental stress (β: 0.133, 95% CI:0.046, 0.221) positively predicted depression, while social support utilization (β: −0.176, 95% CI: −0.303, −0.049) negatively predicted depression.ConclusionOur study suggests that HIV-related stress and social support predict depressive symptoms over time among PLWH and that reducing HIV-related stress and improving social support in the early stages of diagnosis is extremely important in preventing depressive symptoms among PLWH.