RESUMO
The development of behavioral medicine is a new and efficient way to improve the level of national health and the behavior intervention is the core content.There are three methods including story-tellingmethod,behavior-image method and patient-centered assessment and counseling for exercise and nutri-tion intervention(PACE)which have been proven to be effective.The psychological theory of homophily,self-regulation and problem solving provide a scientific explanation for the effectiveness of these three kinds of be-havior intervention.Ripple effect amplifies the effect of behavioral intervention and its psychological mecha-nism is self-determinism and self-regulation theory.In the future,the research of behavior intervention and its psychological mechanism needs to make new breakthroughs in aspects of theory,method and technology.