The present invention relates to the use of benzoic acid and/or its sodium salt in combination with saccharide(s) as active components in the manufacture of a vaginal composition for modulating vaginal flora and vaginal acidity, thereby maintaining the pH value of vaginal secretion within a range from 3.5 to 4.5； and the present invention further relates to a vaginal composition and a method for modulating and maintaining normal vaginal flora and vaginal acidity.
