The Undersea and Hyperbaric Medical Society (UHMS) recommended indications for hyperbaric oxygen therapy (13th edition) 1, gas embolism; 2, carbon monoxide poisoning (or combined cyanide poisoning); 3, gas gangrene; 4, crush injuries, fascial gap syndrome, other acute traumatic ischemic diseases 5, decompression sickness; 6, inadequate arterial blood supply (central retinal artery embolism, problem wounds with difficult healing); 7, severe anemia; 8, intracranial abscess; 9, soft tissue infection necrosis; 10, refractory osteomyelitis; 11, delayed radiation injury (soft tissue, bone necrosis); 12, poor healing after skin grafting and flap grafting; 13, acute burns; 14, idiopathic sensorineural deafness .