Prednisone is effective in asthma with croup, but because of the side effects of this medication, it is usually used during an acute asthma attack. Glucocorticoid medications such as prednisone, dexamethasone, and budesonide are effective in controlling airway inflammation in asthma with croup as described above. However, the inhalation route of administration is more commonly used because it has fewer systemic adverse effects, acts directly on the airways, exerts anti-inflammatory and anti-allergic effects, and requires a smaller dose. However, adverse symptoms such as hoarseness and pharyngeal discomfort can occur. Oral drugs such as prednisone acetate tablets, prednisolone tablets, hydrocortisone, dexamethasone, etc. are mainly used for patients who are ineffective in inhaled hormones or need to strengthen the treatment, and can be administered intravenously in severe cases. Long-term use of glucocorticoids can be centripetal obesity, osteoporosis, immunosuppression and other adverse effects, also has a certain effect on blood sugar. It is recommended to go to the hospital in time when asthma has rales, improve the examination, and standardize the treatment under the guidance of the doctor. The above drugs should be used under the guidance of a doctor, avoid self-medication.