The areola is mainly a pigmentation around the nipple, and the extent of the areola is affected by various factors such as genetics and hormone levels in the body, with one parent having a larger areola, the child is likely to have a large areola. After pregnancy, the level of estrogen and progesterone in the body is significantly higher, the areola will also be affected by the level of hormones in the body to increase in size, mainly in preparation for breastfeeding later, when breastfeeding is over, as the body hormone levels decline, the areola gradually returned to normal size, which is a normal physiological phenomenon of the human body. If areola enlargement occurs during non-pregnancy, it is also necessary to exclude the increase in estrogen levels due to disease. Repeated local stimulation can also lead to areola enlargement, such as wearing rougher underwear, try to wear cotton, soft underwear, usually do a good job of local cleaning, hygiene, keep dry, suddenly appear areola enlargement try to go to the hospital to rule out disease.