Painful raised bumps on the areola during breastfeeding are mainly related to Montgomery’s nodules, breast hyperplasia, breast eczema and other causes, it is recommended that further examination to clarify the cause, to avoid delays in the condition. 1. Montgomery’s nodule: affected by estrogen and progesterone, sebaceous gland hypertrophy occurs on the breast areola to form scattered nodular prominence, which is a normal physiological structure, without special treatment, generally do not need to worry. 2. Breast hyperplasia: due to various reasons causing endocrine hormone metabolism imbalance, estrogen level increases, resulting in lumpy lumps on the areola. 3. Breast eczema: inflammation caused by a variety of factors, usually manifested as eczema, part of the population will appear in the areola lumps phenomenon. It is recommended that further examination be carried out and targeted treatment be provided in conjunction with the actual situation.