Swelling of the labia after coitus may be caused by excessive stimulation of the blood vessels of the vulva during coitus, resulting in localized edema. At the same time, due to the presence of vaginal inflammation, and then have intercourse, exacerbated the occurrence of vaginal inflammation, there will also be the case of labia swelling. Such a situation as far as possible with some warm water, or some gynecological special cleaning, disinfectant, antiseptic lotion 1:10 water for the basin bath for 15 minutes, which can be relieved, and at the same time, the vulva can be smeared with some erythromycin ointment to relieve, can be observed for three days. If the swelling is persistent, it is recommended to go to the gynecology department of the hospital to register and have the secretions examined, and if necessary, you can use oral anti-inflammatory drugs for treatment, including vaginal plugs. In the future life, as far as possible in the coitus must pay attention to both sides of the hygiene, to avoid prolonged inflammation stimulation, otherwise it will also cause the swelling of the situation.