Ventilatory dysfunction in the small airways is somewhat reversible. If you live in a dusty or irritating environment, it is also important to stay away from these work environments. As soon as respiratory symptoms occur, it is necessary to actively treat the symptoms to avoid delayed treatment affecting airway function. This kind of patients can be appropriate inhalation selective agonist β2 receptor, can expand the bronchial tube, such as salbutamol aerosol, terbutaline inhaler. It can also be combined with short-acting hormone inhalation to reduce local mucosal inflammation in small airways, such as budesonide aerosol nebulized inhalation. In conclusion, small airway dysfunction patients, usually pay attention to maintain indoor air circulation, avoid repeated infections, regular review of lung function, some patients can be reversible, if small airway dysfunction occurs, it is recommended to go to the regular hospital for a clear diagnosis and standardized treatment.