Inhalation of too high a concentration of carbon dioxide will be poisoned, mainly refers to the long-term in the low oxygen and high carbon dioxide environment, or suddenly into the high concentration of carbon dioxide environment, will cause poisoning, generally will cause nausea, vomiting, dizziness, headache, will appear inattentive, cause memory loss. In more serious cases, it can cause coma and paralysis of the respiratory center, which can affect the patient’s life. If carbon dioxide poisoning is suspected, you need to leave the environment immediately, you need to inhale oxygen or fresh air in a timely manner, and if the symptoms are more serious, you need to send the patient to the hospital in a timely manner to receive examination and treatment. Generally need to draw blood tests to do blood gas analysis, also need to do X-ray examination, the more serious symptoms need to be treated with hyperbaric oxygen chamber.