Clinical Study on the Treatment of Chronic Airway Diseases (Asthma, Chronic Obstructive Pulmonary Disease) with Shu Fei Tie

Conduct a multi-center, large-sample, randomized controlled clinical study of "winter disease being cared in summer" with Shu Fei Tie prevent recurrence of Asthma and COPD, scientifically evaluate the clinical efficacy and safety of Shu Fei Tie in reducing the recurrence of chronic airway diseases, identify target population, clarify the mechanism of efficacy, and establish a prevention and treatment technology plan for Shu Fei Tie to reduce the recurrence of chronic airway diseases.