Pain on both sides of the vulvar labia during menstruation may be a localized inflammatory reaction or allergy, which requires attention to vulvar cleanliness and hygiene, replacement of sanitary napkins, medication and so on. Swelling and pain during menstruation labia and vulva by menstrual blood for a long time wet, increased moisture and heat, coupled with the friction of sanitary napkins, it is possible to make the skin mucous membrane to produce some small breaks, and lead to a large number of bacteria in the local reproduction of the infection, so there is a swollen and pain, pay attention to vulvar cleaning can be, if necessary, oral antibiotic treatment, such as cefixime capsules, etc.. Pain on both sides of the lips during menstruation may also be caused by allergy to sanitary napkins, it is recommended to change the brand of sanitary napkins in time, and take oral loratadine treatment if necessary. If there is vulvar pain, it is recommended to keep the vulva clean and dry, wash and change the underwear, do not share bath towels and bath tubs with others, and do not wear nylon or similar fabric underwear. Pay attention to menstrual hygiene and change menstrual pads during menstruation. It is best to go to the hospital for examination and then give treatment.