1. Help children form correct sexual concepts and values: Sex education helps guide children to establish correct sexual concepts and values, realize that sex is a natural physiological need, and understand the relationship between sex and love and responsibility.

2. Prevention of adolescent problems: Sex education can help children understand the physiological and psychological changes in adolescence, and provide knowledge on how to prevent diseases and have safe sex, so as to avoid adolescent problems.

3. Improve self-protection ability: Sex education can help children learn preventive measures against sexual assault and harassment, thus improving their self-protection ability.

4. Regulating physical and mental health: Sex education can help children understand the relationship between sex and physical and mental health and avoid the negative impact of sexual problems on physical and mental health.

In short, sex education is very beneficial for children to establish correct sexual concepts and values, prevent adolescent problems, improve their self-protection ability and regulate their physical and mental health.