Abstract: A device for fixing an endotracheal tube. The device includes a body having an insertion hole, an upper wing provided on a periphery of the body and a lower wing provided on the periphery of the body that is spaced from the upper wing such that a patient's teeth are accommodated between the lower wing and the upper wing. The device also includes a cap for accommodating a portion of the body. The device fixes the endotracheal tube firmly so that it secures the endotracheal tube when surgery is being performed on a patient in a prone position. The device is movable along the teeth so that it allows surgery on the interior of the mouth or the tonsils to be performed more efficiently.