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.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Asthma part：Number of acute attacks per year
Timeframe: Count once a year for three consecutive years
COPD part：The number of acute exacerbations per year
Timeframe: Count once a year for three consecutive years
COPD part：the interval between successive acute exacerbations
Timeframe: at weeks 13, 26, 39, and 52, for 3 consecutive cycles (each cycle is 1 year)，Until the first acute exacerbation occurs
COPD part:the number of rehospitalizations within a year
Timeframe: Count once a year until the end of the 3-year cycle