Vulvar itching during coitus can be caused by not washing before coitus and not washing after coitus, and the secretions are cross-infected. If the man’s foreskin is too long during intercourse, there will be some bacteria. This can lead to cross-infection during intercourse, and itching can also occur. For example, during intercourse, if the woman will exist vaginal inflammation is only slight, this time due to cross-infection will aggravate the situation will also exist vulvar itching. In this case, you can first use lotion, such as red nuclear lotion or yellow bitter lotion 1:10 water to wash the vulva or sitz bath in the basin, and then observe for 3 days, if the effect is better, it can be up to 7 days. If the effect is not good, we suggest that we need to test the leukorrhea, according to the vaginal plugging treatment can be.