Cavity neuralgia is professionally known as pulpitis caused by caries that has progressed to the nerves, and the best way to deal with this condition is to go to a specialized dentist. Firstly, the tooth is injected with anesthetic and operated painlessly. A high-speed turbine drill is used to open up the pulp of the tooth and remove the decayed tooth tissue. Next, the inflammation in the pulp is fully released, the pulp is extracted, and after observing for a period of time, if the pulp does not further develop into infection such as periapical periodontitis, the root canals of the tooth are filled through the tip of the cementum, and the tooth is filled externally, and the entire treatment process is completed.