After ozone poisoning, the performance is mainly acute cerebral hypoxia, so you should immediately get out of the scene environment, go to some ventilated place, and then untie the collar of the patient. In addition, pay attention to keep warm, keep the airway open, and give oxygen immediately, usually by nasal cannula or mask oxygen. Mild cases of ozone poisoning usually improve slowly with oxygen inhalation. However, if it is moderate or severe and symptoms such as coma appear, hyperbaric oxygen therapy should be given immediately. Hyperbaric oxygen can increase the oxygen content of the body and promote the release of oxygen, which can quickly correct the tissue hypoxia and also avoid and reduce the further aggravation or occurrence of cerebral edema. If respiratory arrest occurs, treatment such as tracheal intubation and then ventilator-assisted breathing should be given immediately.