Many babies usually have a darkened vulva in the first few months of life because of the influence of maternal estrogen in the mother’s body. Parents do not need to be too anxious when this happens. After a long time, after the estrogen has been metabolized, the phenomenon of blackened baby labia minora will slowly get better. If there is no abnormal secretion in the baby’s labia, it is normal and there is no need to be overly nervous. It is fine to closely observe the baby’s condition and wash it frequently to keep the local hygiene clean. Secondly, it may also be caused by pigmentation, just like human skin, which can be influenced by genetics and has individual differences.