To discuss the impacts of short video addiction on subjective well-being as well as the chain mediating effect between psychological resilience and social anxiety. The short video Addiction Scale, Subjective Well-being Scale (GWB), Social Anxiety Scale (SASS-CS) and Mental Resilience Scale (CDRISC- 10) were used to investigate 352 college students. The results showed that: (1) Short video addiction was significantly negatively correlated with subjective well-being (r=-0.24, p<0.05). (2) Both psychological resilience and social anxiety could mediate the effects of short video addiction on subjective well-being (95%CI: 0.176~0.242, -0.347~0.162), with effect sizes of 0.017 and -0.028, respectively; Psychological resilience and social anxiety played a chain mediating role (95%CI: 0.131~0.808), and the effect size was 0.013. The research reveals that short video addiction can directly negatively predict subjective well-being, and it can also indirectly predict subjective well-being through the mediating effect of mental toughness, social anxiety, and the chain mediating effect of mental toughness and social anxiety.