In normal women, the number of bacteria in the vagina is dominated by hydrogen peroxide-producing Lactobacillus. A positive leuko-band test for BV indicates an imbalance in the vaginal flora, with a decrease in the number of Lactobacillus and a proliferation of other bacteria such as Gardnerella and anaerobic bacteria, which can affect the vaginal environment and cause bacterial vaginitis. Bacterial vaginitis can induce genital infections, pelvic inflammatory disease, perinephritis, painful intercourse, affect couple life and even lead to infertility. Therefore, it needs to be treated actively under the guidance of a doctor by taking oral metronidazole, tinidazole, clindamycin and other medications as prescribed by the doctor, or by using topical medications such as vaginal pessary of metronidazole, topical clindamycin ointment or sitz bath. In addition, women should pay attention to good hygiene habits, keep the vulva clean and dry, avoid scratching, wash the vulva with warm water every day, but avoid washing the vulva with too hot water, change underwear regularly, and do not mix with other clothes to avoid cross infection. Do not have intercourse during the treatment period, but if you have a sexual partner, you need to receive treatment together. Bacterial vaginitis is prone to recurrence, so it is important to follow the medication regimen and not to stop it.