Glucocorticoid nebulized inhalation has the characteristics of local high efficiency and systemic safety, which can exert a strong local anti-inflammatory effect, effectively relieve asthma, improve lung function and control airway inflammation. Since dexamethasone binds less to airway mucosal tissues during nebulized inhalation, it is difficult to exert local anti-inflammatory effects, so it is not recommended. At present, the most commonly used hormonal drugs in clinical use are budesonide, which has rapid action and is safe and effective, but care should be taken to rinse the mouth thoroughly after nebulization to prevent the occurrence of Candida infection in the mucous membrane of the oral pharynx.