If the test is positive for hydrogen peroxide, it indicates an imbalance in the vaginal environment. Under normal circumstances, the presence of a variety of microorganisms in the vagina can achieve a dynamic balance and does not cause infection. Lactobacillus is the dominant bacterium that can secrete hydrogen peroxide and maintain the acidic environment in the vagina. A decrease in Lactobacillus can lead to overgrowth of anaerobic bacteria, which can lead to the production of peroxidase in the vagina, at which point a routine leucorrhea test will show a positive peroxidase. If a vaginal microecological evaluation is done, a large number of miscellaneous bacteria will be found and the vaginal cleanliness becomes poor. A proliferation of conditionally pathogenic bacteria may also be found, causing excessive leucorrhea and vulvar itching. In clinical practice, it is necessary to combine this with a positive sialoglucosidase to determine if one has vaginal inflammation.