Full-month infants coughing with phlegm, mostly considered as small infant pneumonia, because the baby is too young, poor resistance, to actively apply antibiotic treatment. If the cough becomes a single cough, you can apply cephalosporins, such as cefixime granules, supplemented by expectorant drugs, such as orange shellfish combination. If the baby’s cough is a continuous irritating cough, and at the same time accompanied by conjunctival congestion in both eyes, increased secretion, most of the consideration for chlamydia, to actively apply macrolide drugs, such as Erythromycin Succinate granules, azithromycin granules, and so on. If the baby in the cough at the same time, accompanied by poor response to breastfeeding, crying weak, to the hospital in a timely manner, so as not to delay the condition, resulting in serious consequences.