Hyperbaric oxygen chambers are mainly used for the treatment of carbon monoxide poisoning, ischemic cerebrovascular disease, encephalitis, toxic encephalopathy, neurodeafness, multiple sclerosis and other diseases. Hyperbaric oxygen chambers are designed to increase blood oxygen levels, constrict blood vessels and accelerate the formation of collateral circulation by allowing patients to inhale a high concentration of oxygen in a closed pressurized device, thereby causing oxygen to dissolve in large quantities in the blood and tissues. Hyperbaric oxygen chamber treatment can help reduce intracranial pressure and reduce cerebral edema, correct metabolite aggregation or lactic acidosis caused by cerebral ischemia, improve the symptoms of cerebral hypoxia, and promote the recovery of neurological function. Hyperbaric oxygen chamber therapy is not recommended for people with malignant tumors, bleeding disorders, severe hypertension, or intracranial lesions with unknown diagnosis. Before hyperbaric oxygen chamber treatment, you should relax, do not eat, starve and drink heavily, usually 1~2 hours after meals into the chamber treatment, should follow the instructions and arrangements of the medical staff.