1, which is beneficial to the prevention of diseases. Most of the diseases and sexual dysfunction of male and female students' reproductive organs are caused by not paying attention to sexual physiology and mental health in adolescence. Strengthening sex education for teenagers can prevent problems before they happen. ? 2, conducive to physical and mental health. After teenagers enter adolescence, with the maturity of sexual development, there will be a series of physiological and psychological phenomena, such as nocturnal emission in boys, menarche in girls, and sudden sexual impulse with the awakening and development of sexual consciousness. Timely sex education can correctly treat and deal with these sexual physiological and psychological problems, promote their normal physical and mental development, and prevent physical and psychological diseases.

3. It is conducive to preventing juvenile sexual crimes. Strengthening the guidance and education of sex science knowledge can resist the temptation and corrosion of pornographic books, audio-visual products and the ideological trend of "sexual liberation" and "sexual freedom" in western society, and effectively prevent the occurrence of juvenile sex crimes.

4. Conducive to the cultivation of sexual morality. Timely sex education in adolescence is conducive to guiding teenagers to abide by the social morality of sex and sexual behavior. Being a person with noble sexual morality can effectively prevent puppy love, premarital sex, teenage pregnancy, sexual perversion and sexual crimes.