One day in early winter, a middle-aged woman came to my clinic and asked if I was Dr. Zhang. I smiled and nodded, and asked her what her problem was. ”My son’s academic performance has dropped recently,” she said with some anxiety. ”How can you find Dr. Zhang if you’re not doing well in school?” blurted out an anxious other patient. But I know in my heart that bad learning is only a superficial phenomenon, there must be a reason for this phenomenon, and it is related to my profession, because in my medical practice, I can encounter such cases from time to time, once parents see me, they usually do not go straight to the point, but always speak some “unstimulating” language first. Sure enough, after the middle-aged woman saw the misunderstanding and calmed down a bit, she told me the reason why she came here. It turns out that her son is 15 years old, the second year of junior high school, usually in the top five in the class, but the latest exam fell to 30 after, she also felt that recently her son seems to have something on his mind, his mental state is not right, not enough concentration on learning, ask him any questions also did not answer, but once she found that her son got up in the middle of the night, changed a pair of pants, the next morning she kept an eye out, together with her husband carefully Checked her son’s pants and found a ‘stain’. That’s how she knew that her son had lost semen! Could this be the reason? The couple decided that the father should talk to his son. The father had a communication with his son, who admitted that he had recently had this phenomenon, but did not know why he had it, and was a little worried inside, and was too embarrassed to ask adults, but only in private and quietly asked a few close classmates, who seemed to not understand, saying that they did not have this kind of thing, could it be that he was sick? So, he was under a lot of pressure in his heart, and not doing well in the exam this time was related to the lack of concentration of his mind. The father told his son that seminal emission was normal, but the son asked his father why it was so? The father could not answer. In order to give the son a clear answer, the mother came to my clinic. I can appreciate the parent’s heart because, as a parent myself, I know that my son’s performance is one of the things that parents are most concerned about. I praised the mother for her concern and care for her son, and in my opinion, a qualified parent should be able to detect problems from the slightest changes in the child and try to help solve them. So, what is a boy’s first ejaculation? It is a boy’s first dream ejaculation or masturbation, and is actually an important sign that a man is entering puberty. According to the recollection of 600 young students aged 20-25, the average age of first ejaculation is 15-17 years old. In other words, the majority of boys will definitely have their first ejaculation when they reach this age. Why does the first ejaculation occur at this age, and how does semen emerge from nothing and how is it ejaculated for the first time? At this point, I am afraid that many parents will not be able to express this, so let me try to describe it in layman’s terms. During childhood, although children are playful and naughty, their sexual organs are basically in a state of “slumber”, so of course no semen is produced and no semen is released. The reason why semen is produced from scratch is mainly determined by a person’s endocrine activity. As a person grows older, the pituitary gland begins to secrete more gonadotropins, and these gonadotropins order the testes to work, so the testes begin to produce testosterone, an androgen. After the production of testosterone, it takes on the job of promoting the development and growth of various sexual organs, not only to make the testes themselves mature and produce sperm, but also to make the organs closely related to semen production, such as the epididymis, seminal vesicles, prostate, and urethral glands, grow and develop together, and the ducts that carry semen, such as the vas deferens, ejaculatory ducts, and urethra, also grow strong. At this point, the seminal vesicles, prostate and urethral bulb glands begin to produce the liquid part of semen, and the sperm produced by the testes mature in the epididymis, and the two parts merge to form semen, which slowly accumulates in the seminal vesicles, gradually accumulating from nothing to something, from little to much, which is the material basis for the first ejaculation. The first one is induced by sexual psychological activities. Adolescence is the most active period of psychosexual activity, in this period of time the child will show a strong interest in the opposite sex, the mind is easy to focus on the issue of sex. Sometimes masturbation occurs, i.e., the imaginative satisfaction through imaginary imagination, and they imagine contact with someone of the opposite sex, which often leads to the first dream loss. Sometimes there is simply masturbation, where the hand stimulates the sexual organs and simulates sexual activity in order to produce orgasm and lead to the first ejaculation. According to the survey material of 600 young students mentioned above, 401 people (66?8%) had their first ejaculation as dream emission; 199 people (33?2%) had their first ejaculation as masturbation. The second type is triggered by reflex stimulation. Boys wearing tight pants, hot baths before going to bed, and sleeping with the lower half of the body covered too warm can cause extensive and persistent congestion of the sexual organs. In addition, the presence of inflammation in the genitourinary organs, such as circumcision, glansitis, urethritis, prostatitis, cystitis, etc., can also breed sexual organ congestion. This congestive stimulation can reflexively induce the first ejaculation. The actual fact is that, in the event that the sexual organ is congested, a substance called prostaglandin will increase, and this substance can stimulate the sexual organ to ejaculate contraction activity. Although the majority of initial ejaculation occurs at the age of 15-17 years, this work was in full swing within the previous 1-2 years. Therefore, its occurrence is both a sign that a boy has reached a certain level of development, but also a sign that a boy has reached a certain stage of development. The middle-aged woman listened attentively to my explanation, which was a bit tongue-in-cheek, and said that although she couldn’t fully remember it, at least she understood that her son’s first ejaculation was extremely normal and that her son’s classmates didn’t have this phenomenon because of individual differences. I asked her to go back and give my explanation to her husband, so that mature men can teach a lesson to newly mature men. I also suggested that she go to the bookstore and buy a book on adolescent growth and development that she could show her son. I believe: encounter the last encounter some confusion is not surprising, learn the unlearned knowledge will be able to wake up no longer have doubts. I could have ended the article here, but I have one more point to make: in my opinion, it is worthwhile for parents to find and help their children to relieve some confusion in the process of development, but why should they think of giving help only when their children have problems? Do parents not know that their children are developing? Don’t they know that the developmental process may cause confusion to the child? Let me use a philosophical phrase to express it: It is a qualified parent who teaches the right developmental knowledge at the right time, in the right way, for the right individual.