Jinan Bolai Biology 0213465939092 WeChat same number 02 02 02 Vaginal microecology is an ecosystem composed of the endocrine system of the vaginal microbiome host, vaginal anatomy and vaginal local immune system. There are many types of normal vaginal microbiota. Although there are a variety of microorganisms in the normal vagina, these microorganisms and the host vagina depend on each other, constrain each other, and achieve The dynamic ecological balance does not cause disease. Normally, the dominant bacteria in the vagina are lactobacilli. Lactobacillus can maintain the acidic environment of the vagina. Generally, the pH value of the vagina is less than or equal to 4.5, and most of them are between 3.8 and 4.4. The acidic environment of the vagina can inhibit the growth of other pathogens and maintain the microecological balance of the vagina. If the acidic environment of the vagina is changed, such as frequent sexual intercourse or frequent vaginal lavage, it can lead to an increase in the PH value of the vagina, which is not conducive to the growth of lactobacilli, imbalance of the vagina, and a decrease in the resistance of the vagina, which can easily lead to inflammation of the vagina.