There are many reasons for red bumps on breasts during breastfeeding, specifically analyzed as follows: 1, dermatitis, nipples are sucked by the baby sticky saliva and milk, long time not get cleaned, the surface skin of the breast produces inflammation, will be accompanied by itchy skin and skin rashes, need to keep the breast skin clean, at the same time applying the dermatitis ning ointment to stop itching and antibacterial, in the breastfeeding of the ointment to wipe clean. 2, skin allergy, contact with the poor quality of the If you have breast allergy due to contact with poor quality clothes or body lotion, you will have nipple pain, itching and pimples, you need to change good quality clothes and toiletries, and at the same time, take antihistamines, and you can’t breastfeed during this period.3. Eczema-like cancer of the nipple, there will be rashes around the nipple, itching, vesiculation, pain and other manifestations, you need to be highly vigilant, go to the hospital to have a biopsy, and then perform surgical excision of the breast, to prevent recurrence.