The pain in the upper teeth leads to swollen lips, which may be caused by apical periodontitis, and can be treated by drug rinsing, medication, root canal treatment, general treatment and other measures. 1. Drug rinsing: local rinsing with saline and hydrogen peroxide to relieve local edema. 2. Medication: In the acute stage of inflammation, anti-infective drugs such as cephalosporins and metronidazole can be used orally or intravenously to control the infection and symptomatic treatment. 3. Root canal treatment: If an abscess is formed, root canal treatment can be carried out, that is, making a hole in the tooth, discharging the pus inside the tooth root, changing the medicine on time, filling treatment after recovery, and then crown restoration. 4. General treatment: pay attention to rest, drink a lot of water, combine work and rest, and eat a light diet. The pain in the upper teeth leads to swollen lips, you need to go to the hospital in time to check, follow the doctor’s instructions for treatment, the use of drugs need to follow the doctor’s instructions.