Sexual function is also the psychological and physiological response of the organism during the sexual response. In men, sexual function is mainly characterized by the strength of sexual desire, erectile function, ejaculation time, and the occurrence of orgasm. In women, sexual function is characterized by the strength of sexual desire, orgasm, and the reactions of the clitoris, vagina, and uterus. Normally, sexual function varies with age, sexual experience, health status, and environmental factors. Comparatively speaking, with age, sexual function will gradually decline, which is manifested in the number of sexual intercourse, the frequency of orgasm, as well as the strength of libido and so on. When the body has abnormal sexual function, it can be manifested as the appearance of corresponding symptoms, we should go to the regular hospital in time to improve the relevant examination, and the doctor for evaluation and treatment.