White discharge after coitus may be physiological reasons, there may also be pathological reasons, mainly: 1, physiological reasons, during coitus because of sexual arousal stimulation, the vagina will naturally flow transparent or white secretion, but there is no odor, and will not appear itchy, this is a normal physiological phenomenon, do not need special treatment, but you need to clean the local in a timely manner; 2, if there is a vaginal secretion If the vaginal discharge is accompanied by odor or itching, it should be caused by vaginitis. Vaginitis is a very common gynecological inflammation, need to go to the hospital to do routine examination of the leukorrhea, to determine which type of vaginitis, and then symptomatic use of medication. In addition, usually must pay attention to hygiene, especially the hygiene of coitus, should be husband and wife first with warm water to wash the genital organs, and should be diligent in changing underwear.