Patients with acute respiratory distress syndrome are given mask oxygen, high-flow oxygen via the nose, or ventilator-assisted oxygen. Acute respiratory distress syndrome has a persistent and severe respiratory failure, so the patient will have a persistent and severe hypoxic condition, and oxygen must be administered in order to maintain a more normal oxygen saturation. The usual method of oxygen administration is nasal cannula oxygenation, which is definitely not enough for patients in respiratory distress, and they have to be given mask oxygenation with higher oxygen flow to maintain oxygen saturation above 90%. If it cannot be maintained, there is now a relatively new device called transnasal high-flow oxygen, which can maintain a relatively stable oxygen flow inhalation, but also has a warming and humidifying effect, which can reduce the possibility of dry secretions in the airway not being easily discharged due to high-flow oxygen inhalation, thus further blocking the airway and leading to hypoxia. If the oxygen saturation cannot be maintained by high flow through the nose, a ventilator should be used to assist breathing and ensure the oxygen saturation of the body.