Pulmonary function test is a commonly used examination in the diagnosis and treatment of respiratory diseases, including pneumometer examination and other examinations can produce many methods and indicators involving different physiological and pathological significance. China has successively released an overview and precautions of pulmonary function examination[1]Pneumometry Examination Guidelines[2]Guidelines for bronchial challenge testing[3]Guidelines for bronchodilation testing[4]And 8 guidelines for pulmonary function tests to standardize the methods, indicators, quality control standards and clinical applications of these pulmonary function tests.