Trichomonas vaginitis is caused by Trichomonas vaginalis. During treatment, it is important to keep the vulva clean to prevent secondary bacterial infections. Wash the vulva daily, change underwear frequently, avoid spicy foods and alcohol during the acute phase, and abstain from sexual activity during treatment. After treatment, it is necessary to check for Trichomonas negativity promptly. Continue treatment for one more cycle after the next menstruation is completed, and recheck the vaginal discharge after each menstruation. Cure can be considered after three negative results. During treatment, it is also important to avoid reinfection. Underwear and towels used for washing should be boiled for about 5 to 10 minutes to eliminate pathogens.