When a baby has a cold and a dry cough, the first step is to administer a cough suppressant, which can be a traditional Chinese medicine or medications like ambroxol. Additionally, nebulizer inhalation can be used, which also acts as a cough suppressant. Moreover, if a viral infection is suspected, it is appropriate to use some antiviral medications for treatment. However, since viral infections often last a long time and may be complicated by bacterial infections, antibiotics such as cephalosporins and penicillins in oral formulations can be added to treat the infection.