The time it takes for a nipple to heal from pus after being bitten by a baby varies from person to person, usually ranging from 1 week to 1 month. If the nipple is bitten by the baby, it will be broken and cracked, and if left untreated, it will become infected with bacteria, which can lead to pus. If the septicemia is mild, breastfeeding on the affected breast can be suspended to avoid prolonging the condition by continuing to breastfeed. Patients can go to the hospital for breast surgery and be treated with topical medication under the guidance of the doctor, which can heal in about 1 week. If the patient does not treat the bite or pus in time, the healing time of the pus will be prolonged, even up to 1 month; in serious cases, abscesses may be formed, requiring surgical incision and drainage treatment. Therefore, after the nipple is bitten by the baby, you need to suspend breastfeeding on the affected side, pay attention to keep the nipple clean, and use topical emollients or medications to avoid excessive nipple dryness. At the same time, the baby can be guided to use a teething stick to avoid biting the nipple again.