After total thyroidectomy, the ventilator can be withdrawn after 1~2 hours of general use, but the specific decision should be made according to the patient’s vital signs. Under normal circumstances after total thyroidectomy, the use of the ventilator for about 1~2 hours, after the patient’s vital signs are stable, the ventilator can be withdrawn. After the surgery, some patients may be affected by their own reasons for normal breathing, and may be prone to postoperative coma and postoperative bleeding. In this case, the use of the ventilator may be prolonged until the patient’s vital signs have stabilized completely, and then the ventilator can be withdrawn. If a patient needs to use a ventilator after total thyroidectomy, it should be done under the guidance of a specialized physician, and the frequency should be adjusted appropriately according to the respiratory rhythm.