Hyperbaric oxygen chamber therapy is the best time to use hyperbaric oxygen chamber when the patient is severely deprived of oxygen and the patient’s red blood cells cannot carry oxygen very well. The principle of hyperbaric oxygen chamber therapy is that oxygen, which is slightly higher than the normal atmospheric pressure, will be absorbed by the lung tissue after entering the human body through breathing, and can be dissolved into the human blood, which can carry oxygen to all parts of the body after a large amount of oxygen is dissolved in the blood, and a part of the oxygen in the blood can also be combined with hemoglobin to achieve the purpose of oxygen transportation. Therefore, through hyperbaric oxygen chamber treatment, a part of oxygen can be combined with hemoglobin to transport oxygen, and another part of oxygen can be directly dissolved into the blood to achieve the purpose of oxygen transport and treatment of oxygen deficiency.