When a woman has a positive reaction of hydrogen peroxide during a routine leucorrhea examination, it is usually caused by a dysbiosis of the vaginal flora and will not heal on its own. In case of positive hydrogen peroxide reaction, the patient can use some detergents for washing or potassium permanganate solution for washing and sitz baths, which is more effective. If the ratio is too high, it will stimulate the vulva and cause blackening or burning of the vagina, or even dysbiosis of the vaginal flora, causing itching and other symptoms. And don’t use detergent to wash your vagina every day, as this can also lead to vaginal dysbiosis. It is recommended that sexual intercourse is prohibited during menstruation. Women should avoid wearing tight pants, which can cause vaginal dysbiosis, and choose cotton, loose underwear.