The presence of cough and thick yellow sputum indicates that a bacterial infection of the respiratory system has occurred and must be treated with antibiotics. Before treatment, the chest CT should be checked to clarify the site of infection. If upper respiratory tract infection occurs, the chest CT is often relatively normal and oral antibiotics are needed for treatment, such as cephalosporins, if there is no allergy, cefaclor, cefixime, cephalexin, or azithromycin, roxithromycin can be used instead if there is allergy to the above drugs. If there is allergy to the above drugs, azithromycin and roxithromycin can be used as alternative treatment. If the chest CT shows the occurrence of lower respiratory tract infection, such as bronchitis, pneumonia, the effect of oral antibiotics is not enough, must be intravenous antibiotics for anti-inflammatory, if cephalosporins are not allergic, can be intravenous Ceftriaxone, cefoperazone, while using anti-inflammatory drugs to apply cough expectorant drugs, such as aminoglutethimide oral solution, pulmonary cough combination.