If there are two causes of blisters, we should deal with them according to the causes: first, it may be an allergy caused by drug allergy or sanitary napkin allergy, which causes local blisters, this situation is often accompanied by local itching, you can use mometasone ointment or paregoric ointment applied to the local, with anti-allergic effect, and it is also recommended to wear soft underwear, change underwear regularly to avoid friction leading to blisters Second, it may be caused by viral infections, such as herpes simplex virus, which can cause localized vulvar blisters and itching, and after the blisters break, there will be more serious pain, then it is recommended to use acyclovir ointment for treatment, and it is recommended to strengthen nutrition, do not eat spicy, acidic, stimulating food, before the laboratory test does not turn to (-) Do not have intercourse, because through sexual contact can be transmitted to sexual partners.