Rotten root pain may be pulpitis, apical periodontitis of the tooth, etc. If it can be retained root canal treatment is needed, followed by crown lengthening or orthodontic traction if necessary, and if it cannot be retained, extraction is recommended. 1. Can be retained: If it can be retained, root canal treatment is needed, followed by crown restoration, but if the length of the exposed root is insufficient, crown lengthening or orthodontic traction can be performed if necessary. 2. Cannot be retained: If the length of the entire root is insufficient, obviously loose, and the inflammation is not easy to control, it generally cannot be retained, and extraction is recommended. Rotten root pain is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.