Sexually transmitted disease phobia refers to the patient has a history of smut or get sexually transmitted diseases after emotional tension, and even the emergence of hypochondriacal and obsessive-compulsive neurosis. With the increase of various sexually transmitted diseases in the world, sexually transmitted diseases as a special disease, he has a close relationship with the ethics, morality and legal system of society. It is easy for patients to produce a serious ideological burden, so that a small number of non-STD patients have fear of STDs, and mental psychological and behavioral anomalies, treatment difficulties, long course of the disease, the harm to the individual, the family, the community is no less than the current common STDs in our country, first of all, the patient has a history of impure sexual intercourse, or horror related to STDs, STDs history. There are two main clinical manifestations. Psychological abnormalities: the main manifestation of a high degree of fear and worry about sexually transmitted diseases, pain and regret, mental tension, always try to find evidence to prove that they have sexually transmitted diseases, self-reporting a wide variety of sexually transmitted disease symptoms and a strong demand for examination and treatment of the mind and behavior. Some know that the fear is meaningless, but can not control their terror, or once suffered from STDs, although cured, but still terrified. Behavioral abnormalities: the main manifestation of STDs may be infected with a high degree of sensitivity to the pathway, intentional avoidance, such as do not dare to have sex with their spouses, do not dare to go to the public bath, repeated washing of toiletries, some patients fidget, several times a day to seek medical advice, there is a strong sense of inferiority. In addition, patients often have a series of mental symptoms, vegetative nerve function disorders, such as mental depression, generalized fatigue, panic, insomnia, dreamy, sweating, nausea, the serious can have a fast heart rate, heart rate derangement of the performance of the vulva, part of the patient has a vulvar abnormal sensation, such as urinary inactivity, itchy urethra, urethral opening secretion, as well as sexual dysfunction. The above various manifestations can be reduced or disappear due to the patient’s attention shift such as work tension or sleep and systematic examination without positive signs of STDs. Some patients with STDs have a strong fear of STDs, they are afraid that the treatment will not leave sequelae, for fear of losing fertility, for fear of not being able to find a partner, for fear of divorce, for fear of losing their jobs, for fear of spreading the disease to their families, but also for fear of other patients with STDs infected to themselves, and so on. In addition, such patients often insomnia, dreams, dizziness, headache, do not think about food, all day long worried, anxious and irritable; heavy loss of weight, depression, impotence and premature ejaculation, accompanied by lower abdominal distension, urinary discomfort, serious, suicidal thoughts. Sexually transmitted diseases phobia patients, a part has suffered from sexually transmitted diseases, has now been cured, but in the process of diagnosis and treatment by some bad medical institutions of sexually transmitted diseases exaggerated intimidation or misdirection, and finally fell into the “sexually transmitted diseases” in the distress. Another part of the patients themselves do not have sexually transmitted diseases, due to social propaganda, various books and magazines, as well as medical personnel irresponsible speech, some of the body’s functional discomfort as sexually transmitted diseases. Venereal disease phobia is actually a kind of obsessive phobic mental disorder, which is stimulated by social and psychological factors, causing changes in the body’s regulatory mechanism and a series of physiological reactions, which in the long run leads to psychological dysfunction. The cognition of these patients is generally not impaired, and most of them can take the initiative to seek medical treatment. It is mainly caused by the patient’s ignorance or one-sided understanding of STD knowledge. It is the result of a combination of social, psychological and their own personality traits.