Toothache after eating barbecue may be related to periodontitis, pulpitis, dental caries and other diseases, it is recommended that patients go to the dental clinic as soon as possible, patients can be treated by taking medication, root canal treatment, socket sealing, tooth extraction and other ways. 1. Periodontitis: Periodontitis caused by bacterial infection can be treated with oral antibiotics such as roxithromycin and amoxicillin, and those who can’t tolerate toothache can be treated with oral ibuprofen and other non-steroidal anti-inflammatory drugs. Patients need to strictly follow the doctor’s instructions for medication to prevent adverse reactions, while periodontitis also need to go to the hospital for periodontal treatment. 2. Pulpitis: Toothache caused by pulpitis can be treated by root canal therapy to remove the infected pulp and root canal filling to eliminate inflammation and improve pain. 3. Dental caries: Patients with toothache caused by dental caries can remove the decayed tissues through surgical methods, and then use appropriate restorative materials to repair the defective parts. If the caries is serious, it can be treated by extracting the teeth. It is recommended that patients seek treatment as soon as possible to prevent the development of the disease, affecting the therapeutic effect.