Budesonide nebulizer is a glucocorticoid suspension that is white or off-white when shaken well. It is mainly used for the treatment of bronchial asthma by nebulized inhalation, which can replace or reduce the significant side effects that occur when glucocorticoids are given by oral or intravenous drip. It is mainly used for wheezing and shortness of breath in bronchial asthma, as well as for severe and persistent asthma, and can significantly reduce allergic reactions and alleviate the metabolic reactions of congestion, edema and large amounts of inflammatory material exuding from the bronchial mucosa. Side effects are rare and mild, but very few patients experience chest pain, fatigue, flu-like symptoms, eczema, itching, and other side effects. It should be used with caution in athletes, patients with hyperadrenalism, and patients with reduced bone density.