This paper discusses the law of physical and mental development of adolescents and the selection strategy of parenting style. Adolescence is a key stage of physiological, cognitive and social development, which is characterized by accelerated physiological development, formal operation of cognition and the peak of social development. Family rearing style has significant influence on adolescents’ self-esteem, personality, academic achievement and parentchild communication. Research shows that authoritative parenting is the most beneficial to youth development, while authoritarian, dismissive and neglectful parenting has many drawbacks. The article suggests that parents choose authoritative parenting style, optimize parent-child communication, pay attention to adolescent mental health and gender differences, and provide a supportive growth environment to promote their all-round development.