If the vulva is always fissured and painful, the majority of cases are due to bacterial vaginosis. Bacterial vaginosis is caused by anaerobic bacterial infection, which leads to a thin, copious discharge from the vagina, irritating the posterior vaginal union and causing a local inflammatory reaction, resulting in small fissures and pain. Active clinical treatment must be given, such as oral metronidazole tablets for 5 days, and intravaginal metronidazole suppositories are recommended for treatment. For vulvar fissures, it is recommended to use 1:5000 potassium permanganate sitz baths and insist on 1-2 times a day to make the local skin heal as soon as possible through heat circulation.