Thyroid surgery is basically performed under general anesthesia with tracheal intubation. Since the thyroid gland is in front of the second through fourth tracheal cartilages, it may come into contact with the trachea during thyroid surgery, and without general anesthesia, patient swallowing can interfere with the surgical operation. The placement of a cannula in the front of the neck after thyroid surgery can cause skin irritation as well as irritation to the wound, and the patient may feel a foreign body sensation and mild pain, and the symptoms of foreign body sensation usually disappear gradually after the cannula is removed. Thyroid surgery has certain risks, thyroid surgery may damage the recurrent laryngeal nerve, the superior laryngeal nerve, as well as the possibility of damage to blood vessels, thyroid surgery should be observed within 24 hours after the bleeding of the wound and respiratory distress phenomenon. If you experience any discomfort after thyroid surgery, go to the hospital promptly.