With the rapid development of information technology and the acceleration of social transformation, the problem of healthy and dangerous life behavior of Chinese teenagers has been widely concerned by all walks of society, which is related to the physical and mental health of teenagers and the long-term development of society. This study used a cross-sectional survey method and a case analysis method, including poor eating habits, excessive use of electronic products, insufficient physical exercise, and psychological stress. In the process of data collection and processing, statistical methods such as multiple regression analysis and path analysis were used to explore key factors affecting adolescent health risk behaviors, such as family socioeconomic status, parenting style, peer relationships, school environment, etc., and the interaction among various factors was explored. In terms of intervention research, we empirically validated the effectiveness of cognitive behavioral therapy, social support network construction, emotional regulation training, healthy lifestyle education, and other targeted psychosocial interventions. In terms of the logic of intervention strategy, it is based on social ecological theory, comprehensive and protective theory, and forms a systematic, targeted, comprehensive and dynamic intervention system from the aspects of family, school, community and society. Specifically, this study designed a standardized intervention program and practiced in multiple schools for one year, and comparing the data before and after the experiment showed significant changes in the health risk behaviors of students in the intervention group. The results provide a scientific basis for the identification and intervention of healthy and risky life behaviors in adolescents, and the proposed strategies also provide empirical support for the development of prevention and intervention measures by families, schools and relevant government departments. This study highlights the importance of multisectoral collaboration by proposing an integrated intervention framework designed to achieve the goals of long-term healthy development of adolescents.