Sexual desire refers to the desire to perform sexual acts under appropriate sexual stimulation that causes sexual excitement, is an impulse or biological drive for sexual activity, and is also the desire to pursue sexual satisfaction. Sexual desire is a kind of instinct, that is, human psychological and physiological phenomenon, as Freud believed, sexual desire is a psychophysiological process, like appetite, with somatic and mental performance, sexual desire is the inner drive of sexual instinct. In addition to the physiological basis of human sexual desire, there are psychological factors as the conditions for its production, the normal development of the mature male, the sexy psychology is one of the important conditions for the production of sexual desire. The so-called sexy psychology, that is, the perception and feeling of sex. Sexual perception is the body’s sensory system to receive a variety of sexual stimulation, and sexual feelings is the perception of sexual information and sexual stimulation after the psychological experience, such as excitement, excitement, frenzy, satisfaction, etc.. Sexiness is mainly with the help of the human sensory system, which has the role of promoting its production and strengthening of sexual desire, mainly in the following aspects. The first affiliated hospital of Tianjin University of Traditional Chinese Medicine Geng Qiang 1. vision In the animal world, vision has played an important role in its sexual selection, such as the male peacock’s open screen is to show its beautiful feathers to the female peacock courtship. Male sexual desire is most easily aroused by visual stimulation. For men, female secondary sexual characteristics is the most important factor in visual stimulation, tracing back to the ancient period of artwork, there are a large number of works showing female secondary sexual characteristics, such as well-developed breasts and plump buttocks, both to show a certain aesthetic value, but also the worship and praise of their fertility. Women highlight their secondary sexual characteristics through clothing and accessories, which is also a kind of visual stimulation, that is, the old saying “a woman is pleasing to her face”. In addition, visual stimulation also includes physical gestures, such as some of the original dance in the sexual teasing factors, body language between husband and wife, the environment, such as soft lighting in the bedroom, color, as well as the performance of men and women in the picture, literature and art works, etc., can produce different degrees of visual stimulation and stimulate sexual desire and sexual excitement. 2. tactile sense of touch is a feeling of direct sexual stimulation, but also the most important kind of sexy Stimulation means. The skin is the body’s largest receptor, covered with nerve endings, can transmit cold, hot, soft, hard, itchy, painful, dry, wet, slippery, greasy and other information. Many tactile sensations can bring good, pleasant feelings, and the act of sex itself is a tactile stimulation, men through hugging, touching, kissing and other acts, both to promote sexual desire, but also to prepare for sexual intercourse. In the diagnosis of male erectile dysfunction, there is a diagnostic tool called “audiovisual stimulation response”, that is, through pornographic images and sounds to stimulate the male visual and auditory, in order to stimulate sexual desire, to understand the erection of his penis. In the animal world, there is also the phenomenon of sexual selection through sound, such as the painted bird, in its courtship period, that is, through its beautiful singing voice to show love to the female bird. Two pet dogs often sniff each other’s genitals when they meet. As human beings evolved, their access to stimuli expanded and information was gradually transmitted in audio-visual forms such as language, words and images. In terms of sexual activity, some people will be the body smell of both sexes as the second sex characteristics, the human body parts of the breath has a difference, usually can make people feel the smell of the armpits, other parts such as the vulva, hair, skin, mouth can also emit a special smell, men and women in close contact, each other emitting body odor to the other side that is an olfactory stimulation, the same can stimulate each other to produce sexual desire. Practice has proved that the composition of men’s sweat can affect women’s menstrual cycle, and with women’s vaginal secretions in a similar volatile fatty acid hormone for perfume, to their husbands also have a sexually arousing effect. The perfume used for women’s evening makeup in general can also stimulate the sexual desire of most men.