Nerve extractions are generally painless, but may be painful after the anesthesia wears off. At present, when the dentist extracts the nerve of the tooth for the patient, he will usually inject local anesthetics to make sure that the anesthetics play an effect, and then start to extract the nerve of the tooth, in order to reduce the pain of the patient when extracting the nerve of the tooth and to facilitate the operation. Therefore, the patient does not feel anything during the nerve extraction process. Anesthesia can be maintained for a few hours, when the effect of anesthesia disappears, the extraction of the nerve to form a certain trauma, the trauma is not fully recovered during the period, the patient will have a vague feeling of pain, in the eating and other stimuli will be more pronounced pain, which are normal phenomena. Patients need to go to the regular professional stomatology department for nerve extraction, and follow the doctor’s instructions for care after nerve extraction.