Trichomonas vaginitis can lead to secondary infertility, as well as urethritis, cystitis, nephritis, etc. This is mainly because Trichomonas vaginalis can phagocytose sperms, resulting in sperms not being able to survive in the vagina, thus leading to secondary infertility. As the vagina is adjacent to the urethra, it is easy for Trichomonas vaginalis to invade the bladder and kidneys along the urethra, leading to inflammation of the corresponding organs. Trichomonas vaginitis is characterized by itchy vulva, foamy discharge and odor, and is mainly transmitted through sexual intercourse. When found with trichomonas vaginitis need timely treatment, and need to be treated with husband and wife, need to be taken by both husband and wife at the same time metronidazole tablets to treat, after the treatment should be regularly rechecked, and need to repeat the treatment if necessary.