Objective: To explore the relationship between adolescents gratitude and social adaptation, as well as the mediating roles of school boding including support from teacher, peers and school belonging in the association. Methods: A total of 1 304 adolescents from 6 schools and colleges in Xuzhou were investigated with Adolescent Gratitude Scale, School Bonding Scale and Social Adaptation Scale. Results: Adolescent gratitude varied significantly in gender and grade, with girl’s gratitude significantly higher than that of boys(F=38.09, P<0.01). Adolescent gratitude increased as adolescents grew older, and was positively associated with social adaptation(r=0.26, P<0.01). School bonding partially mediated the relationship between adolescent gratitude with social adaptation(β=0.06). Conclusion School bonding plays a partial mediating role in the relationship between adolescent gratitude and social adaptation,adolescent gratitude can make a direct influence on social adaptation,and can also play an indirect role through school bonding.