The representative figure of the life origin theory of education is Du Kang, an American philosopher, educator and psychologist. In his masterpiece Democracy and Education, the theory of the origin of life was put forward for the first time and elaborated in detail. The main point of Du Kang's life origin theory is that education is the process of children's life, not the preparation for future life. It is emphasized that "growth is the characteristic of life and education is growth" education is a process to promote the continuous growth of children's innate psychological function with instinct as the core.