The importance of mental health to the growth of young people is to help us better understand the psychological needs and behavior patterns of young people and provide better support and guidance for their growth and development. Mental health had an important impact on the physical health and social relationships of teenagers. A mentally healthy teenager is usually better able to deal with stress and emotions and avoid physical and social problems caused by psychological problems. Mental health also played an important role in the learning and development of teenagers. A mentally healthy teenager is usually able to concentrate and think better, is more likely to accept new knowledge and skills, and is more likely to achieve excellent results and career development. Therefore, studying the importance of mental health to the growth of teenagers will help us better understand the needs and behavior patterns of teenagers, provide better support and guidance for the growth and development of teenagers, and also help to promote the harmonious development of physical and mental health.