A total of 1612 adolescents in grades 4~9 were investigated using the questionnaire method.On the ba-sis of Attachment Theory and Emotional Security Theory,a structural equation model was used to examine the medi-ating mechanism of interpersonal trust and empathy in the relationship between interparental conflict and prosocial behaviour in adolescents.The research results showed that while the direct path between interparental conflict and prosocial behaviour was not significant,interparental conflict indirectly affected prosocial behaviour through the sep-arate mediating effect of empathy and the sequential mediating effect of interpersonal trust and empathy.The re-search extends relevant theories and provides a basis for effective interventions for the promotion of prosocial behav-iour in adolescents.