First, children are at the age of curiosity, and curiosity is the driving force for their active learning. If parents deliberately avoid children's sexual questions, it will cause children's incorrect curiosity. The more parents avoid children, the more mysterious they feel.

Second, if families and schools do not act or do not act on sex education for minors, they will give up the opportunity of sex education and let children obtain relevant knowledge from other channels to meet their own needs.

Thirdly, the existing erotic, pornographic and violent works in society are full of children's senses and thoughts, which leads to cognitive deviation, and the dislocation of cognitive deviation will lead to behavioral deviation, which will eventually lead to a series of painful social problems. The development of sex education can not be separated from family, school and society. Sex education in schools is a kind of universal education, which is indispensable for school-age children. Sex education in the family is even more indispensable because it can solve special problems. In most cases, parents know their children better than others. Parents can give personalized answers according to their children's personality characteristics and development level, which is more conducive to this one-on-one sex education.

Society plays a testing role in this issue. What students learn at school and at home is tested by the social environment. If family and school education play a great role, then no matter what social environment, the possibility of children's deviation is much smaller. In view of the current lack of sex education, it is necessary to break the situation that schools and families "fight alone". Now we are all fighting for sex education for minors by ourselves. Schools engage in school education and families engage in family education. Some parents even feel that after handing over their children to the school, their educational functions are completely handed over to the school, and there is a lack of communication between them.