There are two possible reasons why vaginitis cannot be cured: 1) not treating the symptoms and having intercourse before the vaginal inflammation is cured; 2) re-exposure to the source of infection. Therefore, it is important to have a routine examination of the vaginal tissues to find out whether it is trichomoniasis, mycotic vaginitis or bacterial vaginosis, and then treat the symptoms according to the cause. At the end of the treatment, it is necessary to have a routine leucorrhoea examination to see if the treatment is complete. If it is mycobacteria or trichomonas, it is recommended to consolidate the treatment for two courses. In addition, couples should be treated together and have good hygiene habits, wash underwear regularly and expose them to the sun, eat less spicy, stimulating and cold things, and have good hygiene during intercourse and menstruation.