Erythromycin ointment can be applied to chapped nipples, there are two aspects: the first aspect is that the epidermal surface skin hosts many bacteria, chapped can cause bacterial secondary infection, at this time the application of erythromycin ointment can play the purpose of preventing infection. The second aspect is that due to chafing there are fissures, at this time with erythromycin ointment, its mechanism has a moisturizing effect, can protect the wound and promote the healing of the wound, so the use of erythromycin ointment is suitable. However, when applying it, you should apply a thin layer, not too thick, and you can apply it twice a day. During the process of application, it is not possible to take a bath to avoid aggravating the irritation of the patient.