Long-term inhalation of budesonide aerosol is not obviously harmful, but some side effects may occur, such as cough, hoarseness, pharyngeal candida infection and mental symptoms such as nervousness and depression. Budesonide is a glucocorticoid drug with efficient local anti-inflammatory effect, which can relieve symptoms of dyspnea caused by bronchial obstruction, and is clinically used for the treatment of bronchial asthma and chronic obstructive pulmonary disease. The local and systemic side effects of long-term inhalation of budesonide aerosol are not fully known. Local adverse reactions such as cough, hoarseness, and pharyngeal candida infections may occur, and may also cause psychiatric symptoms such as nervousness, restlessness, and depression, and systemic symptoms such as hypoadrenalism and growth retardation in rare cases. Budesonide Aerosol is not recommended for people who are allergic to this drug. The medication should be used strictly according to the doctor’s instructions, do not adjust the dose arbitrarily. In case of discomfort, seek medical advice.