Long-term nebulization of asthmatic bronchitis for 48 hours at a time is possible and can be used at your discretion, drawn up according to the severity of your condition. Among the bronchial-related drugs that can be nebulized, bronchodilator drugs (e.g., salbutamol, terbutaline) and hormonal drugs (e.g., budesonide) can usually be used for a long time. The specific application time needs to be decided according to the condition, with patients with severe symptoms being treated every 4-6 hours and patients with mild symptoms being treated with nebulization every 24-48 hours. The treatment of asthmatic bronchitis is needed for a long time, and the improvement of living habits also helps the prognosis. Patients need to drink more water and rest, pay attention to cold and warmth, avoid eating greasy and cold food, prevent colds and flu, appropriate exercise to enhance immunity. Long-term nebulizer treatment requires attention to regular disinfection of the nebulizer, monitoring bacterial resistance and whether the body flora is dysfunctional. If any condition occurs in the long-term nebulization of asthmatic bronchitis, please go to the hospital in time, please do not decide on your own, so as not to delay the treatment.