Vulva that itches at night while sleeping is often due to vaginal inflammation that is not serious or vulvar dermatitis that distracts during the day and only feels itchy at night while sleeping. In this case, it is recommended to do a routine examination of the white belt and to do a gynecological examination to find out if there is a possibility of dermatitis of the vulva or pathogenic vaginal infection, and then give medication according to the specific clinical situation. In addition, if the vulva itches at night when you sleep, you should also rule out the possibility of pinworms, because pinworms tend to crawl out of the anus to lay their eggs at night, so you will feel itching in the vulva when you sleep, so it is best to do a routine stool test.