Erythromycin ointment can be applied to broken nipples. Erythromycin ointment has a bactericidal effect to avoid local inflammation. It is recommended to go to the hospital for examination and symptomatic treatment under the guidance of the doctor. Erythromycin ointment belongs to anti-inflammatory drugs and can be used for cracked nipples. If the nipple rupture occurs during breastfeeding, it may be a phenomenon caused by breastfeeding baby sucking, the nipple rupture leads to obvious pain, use medication under the guidance of the doctor, can be used for erythromycin ointment treatment, to play the effect of anti-inflammatory and pain relief. A common breast disease during breastfeeding is cracked nipples. Nipple cracking is light, manifested only the surface of the nipple cracks, local ooze oozing blood, if not timely treatment, over time, easy to form ulcers, inflammation. In the event of nipple cracking, attention should be paid to the posture of the mother and baby outside, before breastfeeding should be hot compresses on the breast, massage and squeeze out a small amount of milk to make the areola soft and so on. Patients pay attention to rest, diet avoid spicy stimulating food, eat more fresh vegetables and fruits.