The acute attack stage refers to th

The acute attack stage refers to the repeated attack of inflammatory cell infiltration, hyperplasia and hypertrophy of mucus gland, hypersecretion of mucus secretion, increase of airway secretion, excessive and thick sputum of patients, which is not easy to cough up, aggravating the symptoms of airway obstruction, cough, wheezing and other symptoms. Further development of the disease can form critical diseases such as chronic pulmonary heart disease. If it can not be diagnosed in time and treated as soon as possible, it may lead to further deterioration of the patient's condition and bring great damage to the patient's health. COPD is a series of metabolic disorders syndrome caused by airway obstruction and ventilation and ventilation dysfunction resulting from hypoxia and carbon dioxide retention. * the mortality rate is high. Modern medicine mostly adopts anti infection, oxygen therapy and mechanical ventilation as the main treatment measure [7. 8].