Root pain during root canal treatment can be relieved by self-observation, taking anti-inflammatory medication, repeated visits to change the medication, open drainage, etc. Specific treatment methods are mainly based on the cause of the pain. 1. Self-observation: Since root canal treatment is a complicated process, which requires several steps such as root canal preparation, root canal disinfection and root canal filling, it is normal for root canal treatment to cause slight pain in the root of the tooth, which can be self-observed first, and there is no need for special treatment if the pain is relieved slowly. 2. Taking anti-inflammatory drugs: If the root pain is severe after root canal treatment, you can take ibuprofen, metronidazole tablets or cephalosporin antibiotics to relieve the pain. 3. Review and change medicine: In general, during the root canal preparation process, the infected material in the root canal as well as some debris may be pushed out of the apical foramen, thus causing root pain, which needs to go to the hospital stomatology department in time to find a doctor to change the medicine in order to alleviate the pain. 4. Open drainage: some of the affected teeth due to the roots of the sealing medicine, apical drainage is not smooth, resulting in intense root pain, need to go to the hospital stomatology department for open drainage. It is recommended to consult a doctor in time for prolonged pain. The use of drugs should follow the doctor’s instructions.