Asthma exacerbation is mainly triggered by external environmental factors, exposure to allergens, infections, unregulated use of medication, emotions and other factors. 1. External environment: If there is air pollution in the living environment, there will be many fine particles floating in the air, which will lead to asthma aggravation when inhaled. 2. Contact with allergens: allergic asthma patients who are re-exposed to allergens can also trigger asthma or lead to asthma aggravation. 3. Infection: asthma patients who have upper respiratory bacterial or viral infections will aggravate airway mucosal hyperresponsiveness, leading to asthma exacerbation. 4. Irregular use of medication: asthma patients usually need long-term inhalation drugs to maintain the treatment, such as stopping their own medication, can trigger an acute attack of asthma, leading to asthma exacerbation. 5. Emotions: emotional excitement, anxiety and tension and other factors, can induce asthma exacerbation. Asthma patients should cooperate with doctors to standardize the treatment, daily attention to adhere to a healthy lifestyle, maintain a clean living environment, pay attention to cold and warmth, moderate exercise, appropriate relaxation, to avoid triggering factors that lead to asthma aggravation.