Montgomery’s nodes are large sebaceous glands around the nipples and areolas that can disappear. Normally, they are not visible, but after pregnancy, when a woman’s hormone levels are affected, the mammary glands begin to develop and enlarge, and the nodes increase significantly. Montserrat nodules are mainly for sebum secretion to prepare for breastfeeding later, and when breastfeeding is over, the mammary glands will return to normal and Montserrat nodules will disappear gradually. When the sebum secretion is strong after the enlargement of Montserrat nodules, pay attention to good local cleanliness and hygiene to avoid blockage infection causing inflammation, and pay attention to wearing soft and breathable underwear. If you are not pregnant and breastfeeding, you should consider the formation of cysts or infections, so you should go to the hospital for examination and diagnosis.