Mild bacterial vaginitis generally does not heal by itself and needs timely treatment. Bacterial vaginosis is caused by a disruption of the vaginal flora and an increase in the pH value of the vagina, leading to a mixed infection dominated by anaerobic bacteria. This condition results in an increase in vaginal discharge, which is relatively thin but has a distinct fishy odor, and may cause itching of the vulva. The relationship between bacterial vaginosis, endometritis, and pelvic inflammatory disease is very close. Therefore, even mild bacterial vaginosis should be treated promptly. Treatment can be administered orally or locally via the vagina, mainly using anti-anaerobic agents. If not treated promptly, it may lead to ascending infections, causing endometritis and pelvic inflammatory disease, which can result in infertility. Thus, even mild bacterial vaginosis should be treated in a timely manner; it generally does not heal on its own.