After coitus, there will be vaginal itching, this time the causes will be more. First, when the coitus before or after the coitus did not wash the genitals of both sides, this time there will be a certain amount of urine, including a certain amount of secretions caused by the spread of cross-infection, will cause vaginal inflammation and there will be vaginal itching. Second, in the coitus, if the condom will be allergic to some, then this time will also cause allergic vaginal itching. Third, due to the male circumcision, will be mixed with a certain amount of bacteria, there will be vaginal itching symptoms. Fourth, when there are some changes in the body’s hormone levels, will change the vaginal flora environment, this time may also cause vaginal inflammation, resulting in vaginal itching, so this time must be actively treated. Need to go to the hospital registered gynecology, secretion examination, according to the situation need to carry out vaginal plugging.