Swelling two months after tooth extraction is usually not normal, usually due to inflammation of the gums, apical inflammation of neighboring teeth, trauma and other reasons. 1. Periodontitis: Periodontitis mainly refers to the chronic infection of periodontal tissues caused by plaque, which will lead to edema of the gums, bleeding, pus and other symptoms. 2. Apical periodontitis of neighboring teeth: If apical periodontitis is left untreated for a long time, the apical inflammation spreads to the surrounding tissues, resulting in inflammation of the neighboring teeth, which leads to symptoms such as toothache, biting pain, and swollen gums with pus. 3. Trauma: Trauma can cause blood vessels to rupture and bleed, resulting in blood clots and symptoms such as swollen and painful gums. It is recommended that patients appear to be swollen two months after the extraction of teeth, go to the hospital in time for examination, under the guidance of the doctor symptomatic treatment.