Cracked nipples can be smeared with erythromycin in general, which is an antibiotic ointment with anti-inflammatory and bactericidal effects. Cracked nipples may cause bacterial infection, at this time the application of erythromycin can play a preventive infection, anti-inflammatory and anti-itching purpose. In addition, erythromycin cream also has a certain moisturizing effect on cracked nipples, which can protect the wound and promote the healing of cracks. If the patient’s nipple is cracked due to fungal and bacterial infection, erythromycin ointment with compound dexamethasone acetate ointment should be applied as prescribed by the doctor for treatment. If the patient is breastfeeding, the ointment should be dried before breastfeeding to avoid accidental ingestion by the baby. In addition, people who are allergic to erythromycin or people who are prone to allergies should use this medicine with caution to avoid symptoms of allergy. If symptoms of nipple cracking occur, you should go to the hospital and use the medicine under the guidance of the doctor.