It is a normal physiological phenomenon for women to have black color of vulva, which will not appear when observed carefully before puberty. After puberty, the ovaries begin to secrete estrogen and progesterone periodically, and the vulvar skin and mucous membrane will darken under the action of estrogen, so this is a normal physiological phenomenon, as long as the clinic strengthens the local care of the vulva can be. With age, after reaching menopause, the level of estrogen in the body will gradually decline, so that the color of the vulvar skin will improve, and will not be as dark as the vulvar skin of women of childbearing age, so this is also a normal phenomenon. Whether in childbearing age, adolescence or menopause, women should strengthen the care of the vulva, because of the special anatomical relationship of the vulva is easy to lead to bacterial infections, so daily life must be diligent change of underwear, wash the vulva with water once a day to reduce the possibility of bacterial infections.