Hyperbaric oxygen is pure oxygen or highly concentrated oxygen that the body breathes in an environment of high pressure equal to the environment, and the use of hyperbaric oxygen to treat diseases is called hyperbaric oxygen therapy. The effect of hyperbaric oxygen is mainly divided into direct and indirect effects, the direct effect has five points: 1, hyperbaric oxygen can significantly increase the physical dissolution of oxygen in water; 2, can effectively increase the oxygen dispersion rate and dispersion distance, ordinary oxygen therapy and hyperbaric oxygen than, the two oxygen dispersion efficiency is completely incomparable; 3, hyperbaric oxygen can effectively inactivate anaerobic bacteria, in hyperbaric oxygen anaerobic bacteria sulfhydryl group is destroyed, the growth The environment is destroyed, in 2-5 atmospheres of oxygen pressure can inactivate anaerobic bacteria, at the same time, hyperbaric oxygen also has an inhibitory effect on aerobic bacteria; 4, can enhance the function of white blood cells, to assist white blood cells to destroy the invasion to the body of oxygen transfer bacteria; 5, hyperbaric oxygen can compress and dissolve the gas confined in the body, timely treatment of gas embolism, can play a role in the pressure to the embolism removed. Indirectly, hyperbaric oxygen can reduce cerebral edema, lower cranial pressure, adjust endocrine function, regulate the body’s immune function and activate blood and anticoagulation, etc.