This DNP report focuses on population health management, specifically addressing smoking cessation among middle and high school students. It discusses the public health concerns related to tobacco use, including the rise of e-cigarettes, and emphasizes the need for health promotion activities. The report utilizes the Social Cognitive Theory and Transtheoretical Model to develop and implement smoking cessation programs. It outlines the rationale for these theories, detailing the cognitive, environmental, and behavioral factors influencing smoking habits. The report then describes the promotion and implementation of activities, including behavioral counseling, nicotine replacement therapy, and physical exercise interventions. The evaluation section assesses the program's efficacy, aligning with public health components essential to nursing science, and analyzes the impact on population health. The conclusion highlights the potential benefits of the discussed health promotion activities, not only for the adolescent population but also for their families and communities, promoting smoke-free environments and discouraging smoking behaviors.