Trichomonas vaginitis is an inflammation caused by Trichomonas infection, which is difficult to be cured by itself if left untreated, so patients should be actively treated. Trichomonas vaginitis is one of the common types of vaginitis in women, which is caused by Trichomonas infection in the vagina. Direct transmission through sexual intercourse is the main mode of transmission, and it can also be transmitted indirectly, such as in public baths and tubs, etc. Trichomonas can consume oxygen, making the vagina an anaerobic environment. Trichomonas vaginalis can consume oxygen, making the vagina an anaerobic environment, which is easy to cause anaerobic bacteria to multiply, and about 60% of the patients are combined with bacterial vaginosis at the same time. Trichomonas vaginalis can also phagocytose sperm, affecting the survival of sperm in the vagina. If the patient has trichomonas vaginitis should be timely medical treatment, need to be under the guidance of the doctor for treatment, to drug therapy based on such as metronidazole. Because the disease is mostly transmitted by sexual behavior, so the sexual partner should also be treated at the same time. Patients should take the medication on time and not interrupt it at will to ensure the continuity and effectiveness of the treatment. Follow the doctor’s instructions for regular checkups, and maintain good hygiene habits to avoid repeated and cross-infections.