Inflammatory reaction of vulva can be treated by applying erythromycin ointment, which can be improved or recovered in 3-7 days under normal circumstances. When bacterial infection occurs locally in the mucous membrane and skin of vulva and causes inflammatory reaction, such as redness, swelling, heat and pain in the vulva, erythromycin ointment can be applied for treatment after washing the vulva. Usually the symptoms will be relieved significantly in about 3 days, but the specific recovery time may vary depending on the patient’s inflammatory condition and their own drug absorption ability, but most patients can be relieved within 1 week. If the local skin of vulva is virally infected, the clinical use of erythromycin ointment has no significant effect and the medication needs to be used under the guidance of a doctor to better treat the primary disease. The first thing that women should do is to go to the hospital gynecological examination in time, under the guidance of the doctor, with erythromycin ointment plus oral medication comprehensive treatment, at the same time should pay attention to the vulva hygiene, diet light.