In order to give an interpretation for the relationship and complex mechanisms between
rejection sensitivity and Internet addiction, this study conducted a moderated mediation model, focusing
on the mediating role of social anxiety in the relationship between the two and the moderating role of
social class. The results showed that: (1) after controlling gender, age and grade, rejection sensitivity has a
positive direct effect on Internet addiction; (2) social anxiety can play a mediating role in the relationship
between rejection sensitivity and Internet addiction; (3) the indirect effect of rejection sensitivity on
Internet addiction through social anxiety was moderated by social class.