Boys mature later than girls. The average boy is sexually mature at the age of fourteen. Many boys knew nothing about sex beforehand, so wet dream was really shocked for the first time: "What's wrong with me? Why do I pee so sticky? " A few particularly extroverted boys may go to their peers for advice, while most boys spend their menarche in fear and confusion. At this time, the boy will be particularly shy and feel inferior, and always think that he is abnormal. This kind of psychological frustration of the child can be completely relieved by a word from his father or mother. Sex education for boys should be conducted before his sexual maturity, and 12 years old is more appropriate. The main points of education are as follows: nocturnal emission is a normal phenomenon. Healthy teenagers should go to wet dream once a week, and then pay attention to changing clothes. Although the boy has the ability at this time and begins to be interested in girls from rejection to interest, he will not have the desire to possess girls. Boys at this time are not afraid to "offend" women, but most boys will. What is traditionally regarded as ugly behavior is actually not and will not have any negative impact on body, mind and society. If parents find that adolescent boys have behavior, they are advised not to interfere. With the growth of age, boys' yearning for women is getting stronger and stronger. This is because the stimulating hormones in the central nervous system of the brain make the testicles grow more. Testis is a very sensitive part, with a high density of nerves. Whether you have sexual ability or not, whether you can act or not, is determined by the health of your testicles, not by your kidneys. So parents should tell their children to protect their testicles from damage. Due to evolution, the human brain is highly developed, and 75% of the food is used to meet the needs of the brain, including the function of secreting sex hormones. In order to make children have healthy sexual function, parents should provide their children with more foods rich in protein, such as meat, eggs, milk, fish and shrimp. Protein's abundant food is necessary to ensure sound sexual function. If the foreskin is too long, it can be cut at the suggestion of others. The harm of foreskin is that it is easy to hide evil and accept evil, and the second is that it has great influence. About 2% of boys have too long foreskin. It is important to tell the boy that once he starts nocturnal emission, having sex with a woman will lead to her pregnancy. Pregnancy not only has a great influence on the woman's physical and mental health, but also makes the boy panic and cause unnecessary psychological setbacks. So parents should tell boys in advance the importance of contraception and different contraceptive measures.