The drug ingredients of Pediatric Pulmonary Nurse Granules mainly include revertant herb, which mainly contains hydroquinone, p-hydroxyphenylacetic acid, ursolic acid, flavonoids, alkaloids and other major components. It has a strong killing and inhibiting effect on Staphylococcus aureus, Staphylococcus albicans, Staphylococcus catarrhalis and Streptococcus pyogenes, Streptococcus b. The active factors produced by the ingredients of lung-clearing drugs can fully combine with pulmonary phlegm, toxins, sediments and other lung wastes in the alveoli to dissolve them; and they are excreted through the body’s own metabolism to clear the lung wastes. Lung Ning granules can form a protective barrier at the lesion site and block the invasion of germs while repairing the damaged cells of airway wall and alveoli to prevent recurrence.