The main cause of areola lumps in breastfeeding women is a normal physiological phenomenon caused by prolactin stimulation, which results in the proliferation of the glands in the areola. During the breastfeeding period, the female body will secrete a large amount of prolactin, the main role of this hormone is to stimulate the formation and secretion of milk, to ensure that the breast secretes enough milk to complete breastfeeding. At the same time, it will affect the various tissues and glands of the mammary glands, causing them to hypertrophy and proliferate, thus forming the condition of lumps on the areola. Breastfeeding women with lumps on the areola is a normal physiological phenomenon, do not need to be nervous and do not need to deal with, after the end of breastfeeding can become smaller or gradually disappear. The breastfeeding woman should pay attention to breast care, pay attention to hygiene before and after breastfeeding, to avoid the occurrence of acute mastitis.