Cracked nipples may be caused by dry breasts, improper breastfeeding posture, mastitis, etc. The pain can be relieved by applying hot compresses with towels, adjusting breastfeeding posture, and topical antibiotic drugs. 1. Dry breasts: If the breasts are dry for a long time, it may lead to nipple cracking. The patient can relieve the pain by applying hot compresses with a towel soaked in warm water or by applying moisturizing cream after each bath. 2. Improper posture during breastfeeding: Cracked nipples may be caused by incorrect posture during breastfeeding and excessive tilting of the baby’s body leading to pulling on the nipple. You can wash your hands before breastfeeding, take the right position and clean your nipples after breastfeeding to prevent saliva and residual milk from accumulating locally. 3. Mastitis: Mastitis is caused by milk stagnation or bacterial infection and can also lead to cracked nipples. It can be treated by applying antibiotics such as erythromycin ointment plus massage techniques. If you have cracked nipples, it is recommended to eat a light diet and consult a doctor in time to choose the medication and treatment under the guidance of a professional doctor.