Sexual dysfunction is a set of disorders that make it difficult for people to engage in and enjoy sexual relationships with other people, a set of disorders that make it impossible to engage in normal sexual behavior, or to obtain satisfaction in normal sexual behavior. Most sexual dysfunctions do not have organic lesions, that is, there are no abnormalities or lesions in the sexual organs, but are caused by psychological factors. Thus, in sexology, it is often called psychosexual dysfunction. Sexual dysfunction is divided into 4 major categories: sexual desire disorder (hypoactive sexual desire, sexual aversion); sexual arousal disorder (female sexual arousal disorder, impotence); orgasm disorder (lack of sexual pleasure, premature ejaculation); painful sexual intercourse disorder (difficulty in sexual intercourse, vaginal cramps). The first type of sexual dysfunction is sexual desire disorder. Occasional, transient problems with sexual function are very common, and sexual problems must result in significant emotional distress and interpersonal difficulties to be diagnosed as sexual dysfunction. The view that sexual dysfunction is a common disease is well established. According to foreign statistics, the prevalent population: 20% suffer from low libido; nearly 30% of young men suffer from premature ejaculation and nearly 30% of young women suffer from orgasmic disorder; impotence accounts for 8% of men; the incidence of sexual dysfunction is higher in women than in men, and more men than women generally seek treatment. Sexual dysfunction is common, and in one scholar’s study of a representative sample of more than 3,000 adults, it was found that 43% of women and 31% of men had some sexual dysfunction. In a survey of 100 happily married couples, at some point in a person’s life, 40 nicks of men had sexual dysfunction, mainly in the form of impotence and premature ejaculation, and 60% of women had sexual dysfunction, mainly in the form of cold cunnilingus and lack of orgasm. 90% of sexual dysfunction was caused by psychosocial factors. There are also some sexual function problems that are accompanied by other diseases (physical and psychological), or may be caused by certain drugs. Hypoactive sexual desire is a long-term lack of sexual fantasy and desire for sexual intercourse in adults, which is medically defined as 3 months or more. Sexual aversion refers to a chronic and extreme aversion to sexual contact with a sexual partner. However, if the lack of sexual intercourse is only due to temporary situational factors, such as being too busy or too tired to care about the sexual aspect, it cannot be considered a hypersexual disorder, for example, if the lack of sexual desire is caused by painful intercourse, it should be considered painful intercourse rather than hypersexuality. The second type of sexual dysfunction is sexual arousal disorder. Female sexual arousal disorder is manifested by a woman’s repeated inability to secrete or maintain lubricated body fluids during sexual arousal; male erectile dysfunction, or impotence, is when a man cannot get or maintain an erection until the end of sexual intercourse. For but occasional inability to get or maintain an erection is very common, and 70-80 hiccups of men will have had erectile problems at some time in their lives. These problems do not cause erectile dysfunction unless it becomes persistent and interferes with the couple’s relationship or makes him feel distressed. Only 4-9% of men are diagnosed with erectile dysfunction. The third type of sexual dysfunction is orgasmic disorder. Female orgasmic disorder or lack of sexual pleasure refers to a woman’s recurrent delayed orgasm or lack of orgasm following sexual arousal; male orgasmic disorder or lack of sexual pleasure refers to a man’s recurrent delayed orgasm or lack of orgasm following sexual arousal; and premature ejaculation refers to a man’s inability to delay ejaculation until desired. The most common male orgasmic disorder is premature ejaculation. These patients will ejaculate before they want to as soon as they are mildly sexually stimulated. The problem of premature ejaculation is more common, but it can only be diagnosed as a disorder if it causes mental distress and relationship problems with the partner. The fourth type of sexual dysfunction is painful intercourse disorder. Painful intercourse refers to genital pain during sexual intercourse, which is less common in men. Vaginal cramps refer to involuntary contractions of the muscles around the vagina when a woman is involved in sexual activity and are only present in women. Since most sexual dysfunctions have multiple causes, treatment is also a combination of methods. For example, biological therapy, couple and patient sex therapy, and psychosocial therapy intended to solve the problem.