What happens when the child gets up every morning and coughs and has phlegm in his throat

Every morning, the child gets up coughing and has sputum in his throat, which is considered to be caused by tonsillitis, related to viral bacterial infection of respiratory tract, and possibly caused by pharyngitis; parents can feed the child water appropriately, ensure that the throat is moist, and go to the children's respiratory department of regular hospital to do blood routine and sputum smear examination.