If a woman has bacterial vulvovaginitis, she can usually recover in about 7-14 days by applying erythromycin ointment, but fungal-induced vulvovaginitis in women cannot be cured by applying erythromycin ointment. The clinical manifestation of vulvodynia is itching, pain, burning sensation and even swelling, rash, erosion and ulceration of the vulvar skin caused by pathogens invasion or various adverse stimuli. Erythromycin ointment is a macrolide antibiotic with antibacterial activity against most Gram-positive bacteria, some Gram-negative bacteria and Mycoplasma and Chlamydia. Erythromycin ointment should not be used for a long time to avoid the development of bacterial resistance. Therefore, usually, patients with bacterial vulvovaginitis can recover in about 7-14 days by applying erythromycin ointment.