Due to the influence of traditional ideas, in the eyes of parents in China, sex is taboo. Few parents can talk about sex in front of their children, and they don't know how to educate their children about sex. Even in one of the few physical health classes in middle schools, students often blush with shame and hide from Tibet. They can only get a general understanding of the differences between men and women's physiological structures and rarely get involved in deep-seated sexual problems. Sex education classes in universities can just make up for this lesson, and also enable these college students who are physically mature and whose sexual desire has begun to sprout to understand these problems generously. I believe that through correct sex education, these students can understand that sex is not only for passing on the family line, but also a basic physiological desire of human beings, as important as eating and drinking Lazarus. Let these children realize that sex is not only a desire, but also a responsibility, which is the most basic responsibility of an adult. Learn to be responsible for your own body, and also learn to be responsible for the consequences of your actions and your descendants. I believe that more girls can learn to protect themselves through such lively and interesting sex education classes.