According to different age stages, firstly, the cognitive level is different, and the cognition of gender is also different. In early childhood, especially before the age of three, there may be no gender, no consciousness, and men and women are different. Therefore, the most important thing for such children is to strengthen self-protection and tell them that their private parts cannot be seen or touched by others. In this way, children can avoid being misled by some bad people and can't effectively protect their privacy, especially after children go to kindergarten and leave their parents' sight for a long time, so parents must enhance their awareness of protection in this regard. However, with the growth of children's age, there is a clear sense of gender at this time, and the difference between men and women is also known, and the difference between boys and girls is discovered. Under such circumstances, parents can properly explain to their children what is the difference between boys and girls. They must tell their children that they should adopt appropriate distance and methods when dealing with the opposite sex, and they can no longer be as close as they were when they were children. When children grow up, they can be told more profound knowledge about gender, so that they can have an effective cognition when they are in love.
Parents should participate in their children's sex education, and sometimes it is found that neither parent can participate in their children's sex education. For example, girls' sex education may involve more mothers and boys' sex education may involve more fathers, which will also affect children's gender cognition and comprehensive understanding of sex education. Therefore, it is best for both parents to educate their children about sex and let them know that this is a very normal type of education.