Budesonide nebulization works by suppressing the airway inflammatory response. Budesonide is a glucocorticoid that works by suppressing the inflammatory response. Budesonide nebulization can be used to treat conditions such as bronchial asthma and chronic obstructive pulmonary disease by suppressing the airway inflammatory response. Adverse reactions to budesonide include symptoms of hypoadrenocorticism and hyperadrenalism; glaucoma and cataracts; psychiatric symptoms, including depression, aggressive reactions, irritability, anxiety, and psychosis; and bone disorders, including ischemic necrosis of the femoral head and osteoporosis. Contraindicated in persons who are hypersensitive to budesonide or any other ingredient. Precautions: use with caution in athletes; during discontinuation, some patients may experience withdrawal-related symptoms such as joint and/or muscle pain, lethargy, and depressed mood. Take care to rinse mouth after nebulization to avoid secondary oral fungal infections. The medication is recommended to be used under the guidance of a physician to avoid blind self-medication.