White blisters on the nipple during breastfeeding may be caused by incorrect breastfeeding posture, nipple inflammation and other reasons. 1. Incorrect breastfeeding posture: mainly due to incorrect breastfeeding position of the baby, due to the baby’s tongue rubbing the tip of the nipple and rubbing out the blisters, which can be obvious pain when the baby feeds again, you need to correct the baby’s breastfeeding position under the guidance of professional health care personnel. 2. Nipple inflammation: caused by too greasy diet or unbalanced diet, it is manifested as a white film covering the nipple exit hole, which makes the milk cannot be sucked out smoothly, and also causes breast swelling and pain or milk stagnation. The baby must be allowed to suckle diligently or professional lactation personnel to guide the lactation, and follow the doctor’s advice to apply erythromycin ointment treatment. Clinically, when there are white bubbles on the nipples during breastfeeding, you can go to the hospital to find out the cause under the guidance of the doctor and actively deal with it.