Fire extinguisher dry powder contains fire extinguishing chemicals, generally speaking, is relatively non-toxic, but if inhaled in excess, too much fire extinguisher dry powder, easily evolved into aspiration pneumonia and chemical pneumonia, can appear to have a violent cough, respiratory distress and even cause respiratory failure. At this time, immediate emergency treatment should be given for coughing and sputum removal, and silicon-like treatment can be given with the drug Kresilpine. In case of pulmonary edema and respiratory distress, continuous oxygenation, mechanical ventilation and monitoring of vital signs should be given. It is also important to keep warm to avoid other pathogenic infections caused by cold. Generally, if the cardiopulmonary function is stable and normal, these symptoms and diseases will be slowly relieved until they are cured.