If a pregnant woman has vulvovaginal inflammation, it is recommended, first, to keep the vulva locally clean by washing it with warm water 1-2 times a day. The second is to wear loose cotton underwear and change your underwear once a day. The first one is to keep the vulva clean and dry, and the underwear should be completely dry before you can wear it. Thirdly, you can apply local erythromycin ointment for treatment, which can promote the absorption of inflammation, because erythromycin will not affect the growth and development of the fetus throughout pregnancy. In addition, you should pay attention to the diet, once the vulva has inflammation do not eat spicy and sour, stimulating food, so as not to aggravate the local inflammatory reaction. Then if the above treatment still does not improve, you can promptly go to the hospital to give medical consultation.