Azithromycin dry suspension can be used in children with upper respiratory tract infections, including rhinitis and pharyngitis, if there are obvious signs of bacterial infection, including common coughs. Azithromycin also has a special use, that is, if it is a prolonged cough, especially severe cough, frequent cough, especially the duration is longer, especially the laboratory has mycoplasma infections, azithromycin is the drug of choice. For mycoplasma infections, mycoplasma pneumonia, which is more common in children, azithromycin is needed to treat it, with enough therapy to control it, while other medications do not have clear efficacy for mycoplasma. But for other bacteria other antibiotics can also, but for mycoplasma generally still preferred azithromycin for treatment.