How does dot sleep at night cough to have phlegm to do

Children sleep at night cough sputum to drink more water, with ambroxol hydrochloride atomization treatment, but also can alleviate the symptoms of cough. If the above measures can not alleviate cough, you need to go to the hospital to do blood routine and chest X-ray examination, if it is caused by bacterial infection cough, need to be treated with antibiotics under the guidance of a doctor.