There are many reasons why areolas are black, as seen in the following analysis: 1, excessive friction, such as bathing too hard or strenuous exercise, resulting in the areola is friction congestion will be manifested in black. Relax the action, exercise moderation can be. 2, excessive stimulation, such as frequent kneading breast or electric defibrillator defibrillation and other stimuli, will also lead to black areola. 3, melanin deposition, fatigue, mental stress, and aging, will lead to the skin secretion of a large number of melanin deposition. 4, endocrine imbalance, such as taking estrogen, too much mental stress, the body’s hormone level instability in the gestation period, will also lead to black areola. The following are some of the reasons for this. If it does not affect the life can not need treatment, treatment can be used laser, bleaching or surgery. At the same time, patients also have to maintain a relaxed mood, to ensure good habits, have a good physical condition.