Vaginitis is the most common disease of inflammation of the female reproductive system. Patients often have symptoms such as increased leucorrhea and itching. If left untreated, it can cause cervicitis, tubo-ovarianitis or pelvic inflammatory disease. The pathogens that cause inflammation include a variety of microorganisms, such as bacteria, viruses, fungi and protozoa. It can be harmful not only to the patient but also to the fetus and newborn baby. Therefore, it should be actively prevented and treated. The main symptoms of trichomoniasis are an increase in vaginal discharge and vulvar itching. The itching is mainly at the vaginal opening and vulva. If combined with urethral infection, there may also be frequent and painful urination, and sometimes hematuria is seen. Trichomonas vaginalis can engulf sperm and hinder the production of lactic acid, which affects the survival of sperm in the vagina and can lead to infertility. Mycosis vaginalis mainly manifests as vulvar itching, and the degree of itching is the highest among all kinds of vaginitis. In severe cases, it is very painful to sit and lie down. If left untreated, skin cracking and epidermal peeling may be seen. In a few patients, vesicles and superficial ulcers may be seen in the acute stage. Bacterial vaginitis occurs mostly in sexually active women. The main manifestation is an increase in vaginal discharge with a fishy odor, which is aggravated after sexual intercourse.