Background: Based on the cognitive theory and hopelessness theory, the pre-sent study focused on childhood adversity and the cognitive styles known to be cru-cial for the depression symptom. The purpose of the present study is to explore whether cognitive styles (dysfunctional attitude style DAS, and rumination response style RRS) mediated the relationship between experiencing emotional abuse (by parents and by peers) in childhood and depression symptom in adolescence. Materi-als and methods: The participants were 557 adolescents (53.9% male, 46.1% fe-male), age between 15 to 18 years (M=16.16;SD=.98). Childhood emotional abuse scale (abused by parents and peers), depression scale, and cognition styles scales were used as the assessment tools. Results: The results demonstrate that the cogni-tive styles of DAS and RRS are mediating variables between parents’ and peers’ emotional abuse and depression. Parental emotional abuse has a direct effect on de-pression without considering any cognitive styles. The findings generally support the hypothesis that cognitive styles, including RRS and DAS, are mediators between emotional abuse and depression.