Education in a broad sense refers to all purposeful education that affects others' knowledge structure, ideology and morality and promotes development. Education in a broad sense is a unique social phenomenon of human beings and a social activity to promote the development of human quality. All activities that others and themselves purposefully improve people's knowledge and skills and affect people's ideological and moral development are education. Education in a broad sense includes school education, social education, family education, preschool education, formal education, adult education, distance education and so on.