The main three aspects of intercourse should be noted as follows: first, intercourse should pay attention to hygiene, it is best to wash before and after intercourse to reduce the inflammation of the genitourinary system due to inflammatory stimulation. Second, for patients in the period of illness, or patients with infectious diseases, during intercourse should pay attention to avoid the spread of infectious diseases, to reduce the probability of cross-infection. Third, there are some post-operative patients, such as patients who have been circumcised, must follow the doctor’s instructions and have intercourse within the prescribed time to avoid incision fractures and incision infections and other conditions exist.