Vaginitis is the inflammation of the vagina. The vagina of normal healthy women has natural defenses against pathogenic invasion due to the characteristics of its anatomical organization. For example, the closure of the vaginal opening, the close proximity of the anterior and posterior vaginal walls, the proliferation of vaginal epithelial cells under the influence of estrogen and the keratinization of superficial cells, the balance of vaginal pH, which inhibits the reproduction of pathogens adapted to alkalinity, and the alkaline mucus of the cervical canal, make it easy for pathogens to invade and cause vaginal inflammation when the natural defenses of the vagina are disrupted. Normally there are aerobic and anaerobic bacteria that reside in the vagina and form a normal vaginal flora. If the ecological balance between the vagina and the flora is disrupted for any reason, conditionally pathogenic bacteria can also develop. Clinically, bacterial vaginosis, Candida vaginitis, Trichomonas vaginitis, senile vaginitis, and vaginitis in young women are common. Mycosis vaginalis that occurs during pregnancy must be treated. During pregnancy, the woman’s placenta secretes large amounts of estrogen and progesterone. Estrogen makes the body synthesize a lot of sugar, which is needed for the development of the fetus, but because there is also a lot of sugar in the vaginal epithelium, this creates good nutrition and growth conditions for the Candida parasites there. It is important to treat mycosis vaginalis that occurs during pregnancy, otherwise the fetus may pass through the birth canal and infect the newborn, such as thrush. With the invention of antifungal drugs and metronidazole, it is no longer necessary to change the pH to inhibit Candida infection, but to treat the source of the disease with drugs, so vaginal douching is no longer advocated. Antifungal drugs are better to be used topically, so that the systemic absorption is less, the liver, kidneys and systemic effects are smaller, the local concentration is also higher, the effect is more direct. Dacrynic suppositories and mycoplasma suppositories can be administered by themselves. During lactation, the ovaries are in a suppressed state, the epithelium of the vagina is very thin and weak, and the pH of the vagina is alkaline, so anaerobic infection can easily occur.