Vaginitis is one of the most common diseases in gynecology and can occur in all age groups. The main reasons for vaginitis are as follows: 1) the vulva and vagina are adjacent to the urethra and anus, which are locally moist and easily contaminated; 2) women of childbearing age have sex more frequently, and the vagina is a necessary route for intrauterine operations such as childbirth, abortion and curettage, and is easily damaged and infected with external pathogens; 3) postmenopausal women and infants are also susceptible to vaginitis because of their low estrogen levels and weak local resistance. Vaginitis can occur in postmenopausal women and infants because of their low estrogen levels and weak local resistance. Depending on the cause, vaginitis can be divided into many types, namely trichomonas vaginalis, vulvovaginal pseudomycosis (commonly known as mycosis fungoides), bacterial vaginosis, atrophic vaginitis (commonly known as senile vaginitis), infantile vaginitis, and also vaginitis with non-specific pathogens, such as mycoplasma infection, chlamydia, gonococcal infection, etc.