Treatment after carbon monoxide poisoning includes termination of carbon monoxide inhalation, oxygen therapy, vital organ function support, prevention of cerebral edema and complications. 1. Termination of carbon monoxide inhalation: patients should be quickly transferred to a place with fresh air. Rest in bed, keep warm and keep the airway open. 2. Oxygen therapy: Poisoned patients can be treated with oxygen inhalation by mask or nasal cannula. Some patients can also use hyperbaric oxygen therapy as appropriate. 3. Vital organ function support: patients should be monitored for vital signs such as respiration and cardiac monitoring. For patients with severe coronary artery sclerosis, the duration of oxygen therapy should be extended appropriately. 4. Prevention and treatment of cerebral edema and other complications: cerebral edema can occur after severe carbon monoxide poisoning. At the same time of correcting hypoxia, mannitol can be used for dehydration treatment. At the same time, it is necessary to keep the airway open and turn over regularly. It should be noted that in daily life, indoor fireplaces should be installed with smoke pipe to prevent pipe leakage. Factory and mine staff should carefully implement safety operating procedures and strengthen the monitoring and alarm of CO concentration in the air under the mine. When entering a high concentration CO environment, wear a gas mask. If you find a patient with carbon monoxide poisoning you should consult a doctor in time and be given standardized treatment by medical personnel, do not be paralyzed and delay the time of treatment.