Parents don't need to take the initiative to have sex education until their children are 6 years old. Parents can adopt the principle of answering whatever their children ask. For example, if a child asks his mother where I come from, she only needs to answer that you were born in my belly. In the process of answering, you should answer in a language that the child can understand, and the answer must be suitable for his age. After the child is 6 years old, it is necessary to actively and systematically educate the child about sex. When you are 6-7 years old, you should solve two problems for your child: First, what is the difference between your body and the opposite sex, and how to protect it. The second is where I come from. 8-9 years old is the stage to solve the preventive injury, telling children what behavior is sexual injury and what to do. 10- 1 1 year-old solves the problem of adolescent physiological development and tells children what will happen to their bodies during adolescence. Hu Ping said that nowadays, children are developing ahead of schedule, and there are not a few 9-year-old girls menstruating, but more and more 10-year-old boys have nocturnal emission. 12- 13 years old to help children solve sexual communication problems. At this stage, there may be love letters between children. This is normal. To solve this problem, tell children how to grasp this bottom line, how to maintain the feelings of two people and maintain normal emotions. At the same time, 12- 13 years old will also talk about how to deal with sexual information in the media, what is pornography, what is art, and what to do when you encounter such sexual information on the internet or in the media.