Genetic quality is the premise of human physical and mental development and provides the possibility for individual physical and mental development; Environment makes the development possibility provided by heredity a reality. At the same time, the environment has a certain restrictive effect on children's physical and mental development; Students' subjective initiative is the driving force of people's physical and mental development and the decisive factor to promote individual development; School education plays a leading role in human development. Therefore, school education should play a leading role in personal physical and mental development.