If you have a ruptured nipple during pregnancy, you should pay attention to maintaining local cleanliness and hygiene to avoid bacterial infection. You can disinfect it with alcohol or iodophor and apply erythromycin ointment after drying it naturally, which has the effect of softening the local skin and promoting the healing of the ruptured surface, and it can also have an anti-inflammatory effect. You should pay attention to wear loose cotton underwear to reduce the local skin stimulation, reduce friction on the nipple, but also conducive to blood circulation. You should also pay attention to eating fresh fruits and vegetables in moderation, and not to eat spicy and stimulating food, in order to help the local skin healing.