Among women who have sex, about half of them have different degrees of vaginitis and cervical erosion. The reason for this is that when having sex, the male partner does not pay attention to the cleanliness of his genitals, which can bring germs into the vagina; secondly, some women have too many abortions, diagnostic scraping, cervical dilatation and childbirth. The first is that the woman’s vagina is often douched with a large concentration of disinfectant solution, which kills the normal beneficial vaginal flora, and the cervical epithelium is damaged by the stimulation of the douche, which makes it easy to inflame and erode. Normal male semen has certain sterilizing and disinfecting effects, and the female vagina has the ability to clean itself. Therefore, it is difficult to cause vaginitis and cervical erosion. In general, before marriage, the micro-ecological environment in the vagina is in balance due to the barrier protection of the hymen, so even if there are germs invading, it is difficult to make waves, so vaginitis and cervical erosion rarely occur. Therefore, vaginitis and cervical erosion should be treated by gynecologists in time. For mild vaginitis and cervical erosion, vaginal plugs can be used, while for moderate and severe cases, laser, freezing and electric ironing can be used to achieve better results. To prevent vaginitis and cervical erosion, you should pay attention to self-care, both husband and wife should bathe every day; wash the lower part of the body with warm water at 40℃ each before going to bed at night; after intercourse, such as couples who do not have the requirement to have children, women should urinate once, and pay attention to contraception after marriage, so as not to hurt the cervix with abortion for unwanted pregnancy; avoid douching the vagina with commercially available disinfectant, and do not douch with other medicines to protect the self-cleaning function of the vagina. The vagina should be protected from self-cleaning.