How does child cough have phlegm to dietotherapy

Cough is usually accompanied by symptoms, causing cough expectoration for many reasons, such as cold, bronchitis, bronchiectasis, pneumonia, etc., if it is simple cough expectoration, parents can use crystal sugar stewed pear to children to take, with moistening lung to dry, cough expectorant effect, but also can use Chuanbei stewed pear to children to eat.