Neuralgia is also called pulpitis. Treatment guidelines: preserve the living pulp or save the affected tooth, emergency treatment can be open pulp decompression, anti-inflammatory, analgesic, and extraction of the affected tooth with no retention value. Symptomatic treatment. General treatment: emergency treatment can open the pulp to decompress, after warm saline rinse, place pain-relieving drugs, such as camphor phenol, eugenol or toothache water and other small cotton balls in the cavity, which can temporarily relieve pain. At the same time, take anti-inflammatory and analgesic drugs, and consider surgery as appropriate 1-2 days after the pain is relieved. Surgical treatment: i. Root canal treatment. It is applicable to irreversible pulpitis, with the purpose of removing the pulp and preserving the affected tooth, removing the infection in the pulp cavity, and then filling and sealing the root canal with biocompatible material to prevent reinfection. Second, reversible pulpitis, with the aim of preserving the living pulp. Direct pulp capping, indirect pulp capping and pulpotomy are available.