Swelling around the tooth may be caused by wisdom tooth pericoronitis, periodontal abscess, acute attack of chronic apical periodontitis. Depending on the situation, we can choose to extract the tooth after local rinsing and medication, local medication or incision and drainage of pus, root canal treatment and other treatment measures. 1. Extraction after local rinsing and medication: local redness and swelling of the gums and even pus will occur in wisdom tooth pericoronitis, first of all, local rinsing and medication, commonly used 3% hydrogen peroxide solution and physiological saline; severe inflammation with oral medication, such as amoxicillin capsule and metronidazole vitamin B6 tablets, etc.; if the pericoronitis is recurrent, the inflammation is eliminated, and then the wisdom tooth is extracted at a later date. 2. Local medication or incision and drainage: teeth will be swollen when periodontal abscess, you can choose hydrogen peroxide solution or compound chlorhexidine gargle; periodontal abscess is serious, timely incision and drainage, so that the pus can be drained in time. 3. Acute attack of chronic apical periodontitis: acute attack of chronic apical periodontitis will also lead to tooth swelling, this situation requires root canal treatment of the tooth, root canal treatment after the tooth swelling symptoms will gradually disappear. Swelling of the tooth in time to the hospital, clear cause after active treatment, so as not to delay the condition, the use of drugs need to follow the doctor’s instructions.