Bacterial vaginitis is somewhat related to one's immune strength. It occurs when the microecological balance of the vagina is disrupted and the pH value of the vagina changes, leading to a mixed infection in the vagina. This can lead to an increase in vaginal discharge, producing a fishy-smelling leukorrhea and causing itching of the vulva. When the body's resistance decreases and the immune system is weakened, the microecological balance of the vagina can be easily disrupted. This can change the pH value of the vagina and lead to a lack of Lactobacillus, thereby causing bacterial vaginitis. Therefore, it is essential to regularly strengthen physical exercise to enhance the immune system. This can reduce gynecological inflammations, including bacterial vaginitis. Additionally, it is important to protect the barrier of the vagina and avoid frequent vaginal douching, which can cause an imbalance in the vaginal pH, triggering bacterial vaginitis.