Abstract: Based on the General Aggression Model (GAM), Social Learning Theory (SLT) and Moral Disengagement Theory (MDT), we recruited 856 Chinese adolescent athletes and tested them with self-report questionnaires, including Children's Perception of Interparental Conflict Scale, Sport Moral Disengagement Questionnaire, Athlete Aggression Questionnaire to explore the effect of interparental conflicts on adolescent athletes' aggressive behavior, as well as the mediating and moderating role of the sport moral disengagement. The results showed that (1) Sport moral disengagement played a partial mediating role between interparental conflicts and adolescent athletes' aggressive behavior. (2) Sport moral disengagement moderated the relation between interparental conflicts and adolescent athletes' aggressive behavior. To some degree, the mediating and moderating effect model in this study could explain the mechanism of interparental conflicts impacting adolescent athletes' aggressive behavior. In the future, we can enhance the moral cognition of adolescent athletes by raising the level of interparental relationship. As a result, adolescent athletes' aggressive behavior may be prevented

Key words: interparental conflicts, sport moral disengagement, adolescent athletes, aggressive behavior