Swollen and painful gums during breastfeeding should be treated under the guidance of a doctor after first being examined by a dentist. Symptoms can usually be relieved by periodontal scaling, rinsing and medication, and root canal treatment. Antibiotics are not recommended during breastfeeding. The causes of swollen and painful gums are divided into three categories, which should be treated under the guidance of dentists to improve the swelling and pain. 1. Gingivitis: After an oral examination to determine the location of the swelling and pain, check for calculus, soft tartar buildup, whether the gums are bleeding, and whether there are deep periodontal pockets, clean up the calculus and soft tartar, and then apply localized iodized glycerine to improve the swelling and pain, and also maintain intraoral hygiene on a daily basis, which is the key to reducing the pain of swollen gums. Intraoral iodized glycerin will not affect breastfeeding. 2. Wisdom tooth pericoronitis: the location of gum swelling and pain in the wisdom teeth, manifested as localized redness and swelling of the gums, not dare to bite, etc., at this time should be cleaned up the pericoronary and rinsing, alternating hydrogen peroxide and saline rinsing, rinsing the gingival sulcus iodized glycerine on the medication to alleviate the symptoms, rinsing medication and iodized glycerine will not affect breastfeeding. 3. Apical periodontitis: most often seen in acute attacks of chronic apical periodontitis, acute stage can be seen in the affected teeth at the root tip of the gums have obvious pus, feel fluctuations, at this time the abscess should be cut and placed on the drainage strip, the affected teeth under local anesthesia for root canal treatment, the abscess is cut open after the gradual reduction of swelling and pain symptoms. Local anesthesia drugs have no effect on breastfeeding. Gum swelling and pain during breastfeeding should be promptly to the stomatology examination and consultation, such as the need to take antibiotics such as metronidazole, cephalosporin, etc., should be contacted with obstetrics consultation under the guidance of the doctor to use.