The female labia itself is asymmetrical, if bilateral labia minora asymmetry and no labia localized swelling, pain is normal. If in the labia minora asymmetry at the same time appeared on one side of the labia minora swelling, pain, there may be inflammatory diseases, the need for anti-inflammatory treatment, female labia black color is the manifestation of sexual maturity, sexual maturity, estrogen levels increase, estrogen can make pigmentation in the nipples and vulva deposits, there will be labia black color. After pregnancy, the color of nipples and labia will further deepen, which is related to the rapid increase of estrogen and progesterone levels after pregnancy, and the decrease of hormone levels after delivery, women’s vulva and nipples will reduce the local pigmentation.