Mild carbon monoxide can be treated by removing yourself from the poisoned environment, breathing fresh air, and taking oxygen. Mild carbon monoxide poisoning indicates that the exposure to carbon monoxide is relatively short, the amount of carbon monoxide inhaled is small, and it has not caused serious brain damage. After the discovery of poisoning should be immediately removed from the poisoned environment, or open the window to ventilate, breathe fresh air, most patients’ symptoms will be relieved in a short period of time. If there are conditions can be given to the patient oxygen therapy, give ordinary nasal cannula oxygen can be, can improve the concentration of blood oxygen, relieve the symptoms of carbon monoxide poisoning; if the condition requires can also be carried out hyperbaric oxygen therapy. Carbon monoxide poisoning is recommended to seek immediate medical attention, treatment and observation under the guidance of a doctor, if there is a progression of the disease, the need for further therapeutic intervention.