Treatment of sulfur dioxide poisoning : 1, acute sulfur dioxide poisoning, if at the scene, the first should be out of the environment, must be in the environment without sulfur dioxide to talk about treatment. Otherwise, even the rescuers are poisoned together; 2, oxygen therapy, high flow on oxygen, those with pulmonary edema must be on a ventilator, need to be hospitalized, oxygen therapy is very important; 3, because it is pulmonary edema, give high doses of hormones, the dose is larger than the conventional dose, 500mg, 1000mg of methylprednisolone. There are also bronchodilators, because the formation of edema and burns of the airway, the narrowing of the trachea, generally need to use bronchodilators to expand the bronchi; 4, symptomatic support treatment, for example, caused by ARDS, acute lung injury, we can use blood filtration, nutrition therapy and other methods of treatment.