Anesthesia is used for tooth extraction and is usually not painful. Pain may occur after the anesthetic has worn off. Generally, relevant examinations will be carried out before tooth extraction to clarify the specific location of the root of the tooth and the mandibular nerve canal, and local infiltration anesthesia or nerve block anesthesia will be carried out during the extraction, after the anesthesia medicine will block the nerve conduction and reduce the pain sensation, and the extraction of the tooth will not produce pain sensation if the anesthesia effect is ideal. After the anesthesia has worn off, pain may occur. If the pain after tooth extraction is obvious, you can follow the doctor’s instructions to take pain medication such as ibuprofen, mostly can be relieved. If the tooth extraction is accompanied by swollen gums and biting pain, it is usually considered to be an infection accompanied by an acute inflammatory reaction, at this time the effect of anesthesia medication is less effective and cannot be completely absorbed, and there will be obvious pain symptoms when extracting the tooth, therefore, anti-infective treatment should be carried out during the period of acute inflammation of the tooth and then extracting the tooth. When tooth extraction is needed, relevant examinations should be conducted under the guidance of the doctor and standardized treatment.