I. Treatment goals 1. to achieve and maintain symptom control; 2. to maintain a normal standard of living, including exercise capacity; 3. to maintain lung function levels as close to normal as possible; 4. to prevent acute asthma attacks; 5. to avoid adverse effects caused by asthma medication; 6. to prevent death due to asthma. Second, the principles of prevention and treatment Asthma control treatment should be started as early as possible. Adhere to the principles of long-term, continuous, standardized and individualized treatment. Follow the management cycle of “assessment-adjustment of treatment-monitoring” during the treatment process until the drug is discontinued and observed.