General anesthesia is usually used for thyroid nodule surgery, but not local anesthesia, except for radiofrequency ablation of thyroid nodules, which can only be done under local anesthesia. Thyroid nodule surgery requires adequate analgesia, the operation needs to be carefully operated, because the anatomical location of the thyroid gland is relatively special, it is close to the esophagus, trachea, laryngeal nerves, such as during the operation, if the damage to the laryngeal nerves are prone to cause hoarseness. General anesthesia with intubation, which has good analgesic effect and deep anesthesia, can allow patients to operate in a painless and safe situation, which can meet the needs of thyroid nodule surgery. If you choose local anesthesia, in case the trachea collapses during the surgery will cause respiratory difficulties, severe asphyxiation is possible, so local anesthesia can not meet the needs of surgery.