Wet cough and phlegm cough in babies usually represent symptoms of phlegm and cough in the throat, which may be related to acute upper respiratory tract infection, bronchitis or pneumonia. It can be relieved by proper back patting, environmental adjustment and medication. 1. Acute upper respiratory tract infection: mostly caused by viral infections, will make the baby appear wet cough and phlegm cough symptoms, mostly belong to the self-limiting disease, at this time you can through the appropriate back patting, so as to promote the discharge of phlegm, and at the same time pay more attention to warmth, to avoid prolonged exposure to cold environments, to prevent the symptoms from worsening. 2. Bronchitis or pneumonia: may also cause the baby to cough with phlegm symptoms, you can choose aminobromine hydrochloride drugs, so as to achieve a better expectorant effect, improve the baby’s symptoms. If the bacterial infection can choose amoxicillin, cephalosporin and other drugs treatment. For influenza virus infection, you can choose oseltamivir, cytomegalovirus infection, you can choose ganciclovir and so on. Wet cough and phlegm cough may also be caused by other reasons, it is recommended to consult a doctor in time to avoid delay. All of the above drugs should be used under the guidance of a doctor, and should not be used blindly to avoid adverse effects.