Brain hypoxia is usually caused by acute or chronic respiratory problems. Treatment: 1. Oxygen should be given immediately to improve the hypoxic state of the tissues, and medium-flow or high-flow oxygen can be given. 2. If respiratory arrest occurs, tracheal intubation and ventilator-assisted respiration should be given immediately.2. Treatment of the cause of the problem: If there is respiratory obstruction, the Heimlich maneuver can be given to relieve acute respiratory obstruction, and the symptoms should be relieved soon. If chronic respiratory failure, or chronic lung disease caused by acute upper respiratory tract infection, it is necessary to treat the upper respiratory tract infection. 3, prevent complications, brain hypoxia is longer, more or less will appear cerebral edema, can be given mannitol or tachypnoea dehydration treatment, reduce cerebral edema. If respiratory acidosis occurs, intravenous sodium bicarbonate can be given.