Sex education is the foundation of quality education in colleges and universities. The growth of college students is not only the growth of physiology and knowledge, but also the growth of psychology, ability and morality. Therefore, in the 2 1 century, sex education, as the basis of quality education for college students, should be the basis and important content of quality education in colleges and universities, and it is a new subject that must be added to cultivate high-quality talents in the new century. Sex education is the foundation of modern civic education in colleges and universities. With the development of higher education in China, the purpose of higher education in China has changed from cultivating "elites" to cultivating "the masses". The purpose of higher education is to train qualified modern citizens. Therefore, as a higher education to cultivate modern citizens, sex education, a basic quality education related to people's self-awareness, healthy development and growth, should first be included in the curriculum of higher education. Sex education is the objective need of people's all-round development. Because of the misleading of our traditional culture and traditional concepts, it has been ignored by everyone. This neglect will directly lead to the lack and imperfection of basic quality education in the process of college students' growth, and directly lead to the one-sided development and growth of college students, rather than the real all-round development and growth. Therefore, systematic and scientific sex education for college students should be based on scientific sex knowledge, and at the same time pay attention to effective sex concept and sex moral education suitable for China's national conditions, so as to promote the all-round development of contemporary college students!