Vaginitis is a common gynecologic disease that can develop in all age groups. The vagina hosts microorganisms that form the normal vaginal flora, but the ecological balance between the vagina and these microorganisms is not pathogenic, and once the balance is disturbed or exogenous pathogens invade, inflammation can occur. Common vaginal inflammatory diseases include the following: 1. Trichomonas vaginalis: caused by Trichomonas vaginalis, which is transmitted directly through sexual intercourse and indirectly through public baths, swimming pools and toilets. Trichomonas vaginitis is often combined with other vaginitis, and the United States reports that about 60% coexist with bacterial vaginosis. It is characterized by increased leucorrhea, itching, thin, purulent, yellow-green, frothy, foul-smelling discharge, and itching mainly of the vaginal opening and vulva, with occasional burning, pain, and painful intercourse. The main treatment drugs are metronidazole and tinidazole. It is often combined with trichomonas infection of the urethra and vestibular gland, so systemic medication is often required. If you do not tolerate the drugs, you can use them vaginally. Sexual partners should also be treated at the same time and sexual intercourse is prohibited during treatment. 2. Vulvovaginal pseudomycosis: This is commonly known as mycosis fungoides. It is a conditional pathogen, most of them carry the bacteria but do not develop the disease, they multiply in large numbers when the immunity is low and cause vaginitis symptoms. For example, diabetes, long-term application of antibiotics, obesity, localized damp heat, etc. The main manifestations are itching and burning pain in the vulva, and it may be accompanied by painful urination and painful intercourse, increased leucorrhea, restlessness when the vulva itching is severe, leucorrhea in the form of bean curd or curd-like, and edema with scratches on the vulva. Treatment should eliminate the causes, such as diabetes, abuse of antibiotics, used underwear towels, etc. should be scalded with boiling water. Commonly used drugs are clotrimazole, mycobacterium. Topical medication is used for 7-14 days, and oral medications fluconazole and itraconazole can be added for recurrent severe cases. Bacterial vaginosis: a mixed infection caused by dysbiosis of the vaginal flora. It is not caused by a single bacterium, but by a combination of pathogenic bacteria. The reason for the alteration of the microbiota is unclear and may be related to multiple sexual partners, frequent sexual intercourse or excessive vaginal douching. The main symptoms are increased vaginal discharge with a fishy odor, aggravated after sexual intercourse, and mild vulvar itching or burning sensation. The discharge is off-white and of low viscosity. Anti-anaerobic drugs, such as metronidazole and tinidazole, are preferred for drug treatment, either orally or locally for 7-14 days. 4. Aged vaginitis: after menopause, the local resistance of vagina decreases, estrogen level decreases, vaginal mucosa becomes thin, and pathogenic bacteria infection causes. It is characterized by increased vaginal discharge, external itching, burning pain, and painful intercourse due to atrophy of the vaginal mucosa. The principle of management is to inhibit bacterial growth and increase vaginal resistance, which can be done with metronidazole and topical estrogen ointment. For patients with vaginitis symptoms, it is recommended to go to a regular hospital for routine examination of the leucorrhoea to clarify the type of inflammation, and then use the medication accordingly.