The clinic often encounters a group of college students or young friends who are not yet married, they will have a lot of sexual confusion, the following have a trivial talk about the “sex” problem. From the physiological point of view, sex is one of the most basic physiological characteristics of human beings, and the need for sex is a natural instinct, just like human beings need to breathe and eat, as Mencius said, “Food and sex are also sex. The physiological understanding of “sex” is the basis for the understanding of “sex” from other perspectives. Young people need to understand the problems related to dream emission (seminal emission): infrequent seminal emission is normal, so infrequent dream emission is not considered a disease. However, because seminal emission is often accompanied by waking up from a dream, mental tension and psychological burdens are easily formed, and symptoms such as insomnia, headache, dizziness, lethargy, poor appetite, and fatigue occur, which is the “seminal emission disease”. The concept of sex, from the psychological point of view, the concept of sex involves all the psychological phenomena related to sex, including human sexual attitudes, sexual orientation, sexual preferences and the emotions experienced in sexual activities. ”Sexual orientation”, also known as “sexual preference” or “sexual orientation” or “sexual tendency”, is used to describe a person’s sexual It is a term used to describe the object of a person’s sexual desires, fantasies, and feelings, usually another person. The categories of sexual orientation are: heterosexual, homosexual, bisexual, and asexual. Sexual orientation is a complex issue, and there are no advantages or disadvantages to various sexual orientations. From a social point of view, sexuality is the basis for human society to reproduce and develop. At the same time, the development of sexuality and sexual behavior is bound by social moral norms and monitored by public opinion and laws. I think we can understand “sex” in the following ways: 1) the female snail created man is just a legend; 2) social morality restrains sexual concepts and behaviors; 3) sexual concepts and behaviors cannot override laws and morals; 4) there are differences between Chinese and Western, ancient and modern. Therefore, in different ideologies, historical periods, moral norms, people will have different sexual concepts and sexual behavior. The so-called sexual psychology refers to the psychological condition and psychological process formed by the individual on the basis of sexual physiological maturity related to sexual characteristics, sexual desire and sexual behavior, in short, the psychological phenomenon related to sexual physiology and sexual behavior. Sexual urge refers to the desire and impulse for sexual behavior under the joint action of sex hormones and internal and external environmental stimulation. It is often accompanied by the engorgement of the reproductive organs and psychological excitement and euphoria, is a combination of physiological and psychological response. Sexual dreaming is the occurrence of sexual intercourse in sleep. It is also a normal psychological and physiological phenomenon that occurs after sexual maturity in adolescence and is common among young people. The essence of sex dream is a subconscious activity, which is one of the normal human sexual thinking. Sexual dreams are not controlled by people, and the great difference between dreams and reality does not represent the real will of people. The young people often encounter the act of masturbation: refers to the use of hands or other objects to stimulate the sexual organs and obtain the pleasure similar to sexual intercourse, as well as to achieve orgasm. It is important to know that a moderate amount of sexual stress can help the body’s metabolism. Remember: no guilt, no hygiene! Pre-marital sex is also an issue that is often talked about. It for is a non-unilateral sexual act that occurs between heterosexuals or homosexuals without a spouse in the absence of marriage registration procedures. The characteristics of premarital sex are that it is consensual and not forced by violence; there are no legal guarantees, no obligations and responsibilities between spouses; and it is prone to disputes and serious consequences. Love “cup of water” refers to the performance in love only take into account the feeling at the time, believe in “do not care about the long time, only care about once had”, “love who is who”, “love is who”, “love is instant pleasure”. “This is a very undesirable orientation to love. We should have a scientific understanding of “sex”. Sex is a comprehensive science. It includes sex physiology, sex psychology, sex sociology, sex ethics, sex aesthetics and so on. We should try to learn and master the knowledge of sex science to avoid sexual ignorance and eliminate the one-sided understanding that sex is only a biological instinct. Civilized and moderate heterosexual intercourse can meet the psychological needs of youth and relieve sexual repression. Heterosexual intercourse is good for expanding confidence, perfecting oneself, and plays an important role in one’s love marriage and personal development. However, young people in heterosexual intercourse should grasp the proportion, pay attention to the occasion, regulate behavior, handle the relationship between “friendship” and “love”. In the counseling room, sex should no longer be a difficult issue to talk about, young people can feel free to vent their frustrations. According to incomplete statistics, among the problems that young people consult, the problem of interaction with the opposite sex occupies more than half of the proportion, most of them are more or less involved in confusion about sex, when you encounter sexual problems, you can openly seek psychological counseling.