In the outpatient work, from time to time, we encounter adolescents consulting sexual dysfunction, all with impotence, premature ejaculation, spermatorrhea and non-ejaculation as the main complaints. And it is becoming a common phenomenon. So why do adolescents think they have sexual dysfunction? 1, cognitive bias, education is not perfect. China’s current sex education for adolescents is still in the infantile stage. 2, there is no formal system complete textbook, no special force and strict system. 3, social propaganda is formal and superficial. So they do not have perfect knowledge of sex, they complain of impotence, premature ejaculation and other sexual dysfunction is only based on hearsay and books and newspapers to get the introduction, purely on paper, and more out of context, not enough knowledge of sex.