If the patient has a mild natural gas poisoning, the first thing to do is to quickly get out of the poisoned environment, come to a cool, dry and ventilated environment, for the next step of treatment. If there are conditions can be quickly given to the patient oxygen therapy, and synchronized call 120 for help, quickly transferred to the hospital for the next step in the treatment, to choose to be able to carry out hyperbaric oxygen chamber treatment of the hospital for treatment. At the same time to give the patient for vital signs monitoring, such as heart rate, blood pressure, pulse, especially blood oxygen saturation monitoring, according to the results of the patient’s blood gas analysis, at any time to give the patient to adjust the flow of oxygen inhalation, concentration, and rapid foreground hyperbaric oxygen chamber for the next step of treatment. After the hyperbaric oxygen chamber treatment is completed, drug sedation can be carried out, for example, mannitol, reduced glutathione, cerebral protein hydrolysate and other nutritive brain cells and detoxification drugs can be applied for thorough treatment.