In the production and living environment, carbon monoxide (CO) can be produced by incomplete combustion of carbon containing substances. Acute carbon monoxide poisoning can occur after inhalation of excessive CO if precautions such as sealing of gas pipes and ventilation of the environment are not taken. Acute carbon monoxide poisoning is a relatively common life poisoning and occupational poisoning. I. Clinical manifestations Severe headache, dizziness, panic, facial flushing, cherry red lips, general weakness, nausea, vomiting, drowsiness, blurred consciousness, blurred vision, dullness of sensation, hallucinations and other symptoms. The early manifestations of carbon monoxide poisoning are mainly: severe headache, dizziness, panic, facial flushing, cherry red lips, general weakness, nausea, vomiting, drowsiness, blurred consciousness, blurred vision, dulled senses, hallucinations and other symptoms. First aid treatment 1. Quickly move the patient away from the poisoning site to a ventilated place, loosen the collar, pay attention to keeping warm, and closely observe the state of consciousness. 2.Give oxygen in time and effectively, and give hyperbaric oxygen therapy to those who have conditions. 3. To eliminate cerebral edema, promote cerebral blood circulation, maintain respiratory and circulatory functions and other treatments should be given to those who are severely poisoned. Prevention 1.Before going to bed at night, burn out the coal of the heating stove, do not smother the cover, the stove should be installed with a pipe; the room heated by burning charcoal should be kept with good convection air. 2, gas water heaters or gas, coal-fired, oil-fired equipment, etc. should often maintain good indoor ventilation conditions. 3, automatic ignition of gas appliances in the continuous unlit, should let the gas has been discharged before ignition, pay attention to check whether the rubber tube connected to the gas appliances loose, aging, broken, insect bites. 4, do not lie in the doors and windows closed, open the air-conditioned car to sleep, air-conditioned car in the stop when the air conditioning do not close all the windows.