Gum swelling after tooth extraction may be a symptom of postoperative infection. Postoperative infection requires intravenous fluids, which can be infused with cefuroxime sodium plus ornidazole sodium chloride injection, or in case of cephalosporin allergy, you can choose to use erythromycin and etimicin sulfate, which are able to avoid allergic symptoms. If the swelling and pain is not heavy, you can also take oral medications, such as cephalosporin, amoxicillin, spiramycin, erythromycin, all of which have the medicinal use of promoting swelling. In addition, intraoral mouthwash is recommended, such as chlorhexidine gargle, cotrimoxazole gargle; locally, you can also spray sprays, such as watermelon cream spray, stomatitis spray, open-throat sword spray, etc., which is conducive to the reduction of swelling of the gums. After tooth extraction, it is recommended to apply ice packs within 24 hours, which can reduce the symptoms of swelling and pain.