For bacterial vaginitis or trichomonas vaginitis women can usually consider the use of metronidazole lotion to wash the vulva or sitz bath, due to the irritation of metronidazole lotion is relatively large, so do not use the original solution to wash, and need to be diluted first can be metronidazole lotion and water in accordance with the ratio of 1:10, blended into a solution and then wash the vulva or sitz bath. Just because the simple cleaning of the vulva or sitz bath can not be women’s vaginitis completely cured, so in the case of sexual intercourse also need to be cleaned after the vaginal topical treatment, usually can use metronidazole gel or metronidazole suppository. For trichomonas vaginitis patients also need to take oral metronidazole tablets with their sexual partners to avoid cross-infection again, and in the whole vaginal medicine and wash the vulva during the period can not be carried out coitus, so as not to aggravate the inflammation of the vagina.