Cracked nipple is a superficial ulcer that occurs on the nipple during breastfeeding. It often occurs during the first week of breastfeeding and is more common in first-time mothers than in menstruating mothers. Wipe dry after washing. 2. Change your underwear often to prevent rubbing your nipples and areolas. You can also enhance nipple resistance by massaging the nipples. 3.For flat, too small nipples can be instructed to correct after 8 months of pregnancy. 4.After delivery, let the baby suck vigorously as early as possible. If the sucking position is correct, most nipples will improve their extension after the baby sucks. 5.Before breastfeeding, apply moist heat to the breasts and nipples for 3 to 5 min to soften the areola and make it easy for the baby to suck. Breastfeeding should be done in a comfortable and correct feeding position (Figure 1), and the position of the baby can be changed alternately during breastfeeding so that the sucking force is dispersed around the nipple and areola. 6. Pay attention to the baby’s oral hygiene, if stomatitis, thrush and other infections occur in the mouth and lips, they should be treated promptly. During this period, to prevent secondary infection of the breast, breastfeeding can be suspended for 24h. 7. After breastfeeding, if the baby still holds the nipple tightly, use your index finger to gently press the baby’s chin to gently interrupt sucking and allow the nipple to be delivered naturally. Breast milk is rich in human proteins and antibodies, which have antibacterial and promote epidermal repair, and can be squeezed out and applied to the nipple and areola after breastfeeding and left to dry.