Abstract: Under the dual social background that the physical health of adolescents has become a social focus problem and the characteristics of mediaized society are prominent, combined with the commonness of media responsibility theory and the personality of adolescents' physical health issues, It puts out the concept of media responsibilities for adolescents' physical health promotion and their goals.It establishes the fulfillment mechanism of media responsibilities for adolescents' physique health promotion in China, which includes the dissemination mechanism for the effect of adolescent physique health policies, the optimization mechanism for the educational effects of adolescent physique and health in schools, the promotion mechanism for the effects of adolescent physique and health effects in family, and the promotion effect for adolescent physique and health in communities.It reveals the elements of the fulfillment of the responsibility for the promotion of physical health for adolescents, their interrelationships, and the way they operate.