According to modern research,the pathogenesis of asthma mainly includes airway inflammation,airway hyperresponsiveness,airway remodeling,etc.Airway remodeling is the key factor that leads to the progress of asthma,and it is also the main factor that leads to airway hyperresponsiveness and irreversible airflow restriction.Traditional Chinese medicine believes that"phlegm and blood stasis"block the airway and narrow the lumen is the most important factor in the treatment of asthma.