Analysis of illness: According to your description, the child coughs and expectorates, which means it is caused by a little bronchial inflammation. In fact, as long as the child does not have symptoms such as fever, infusion treatment is generally not needed.

Guidance: I suggest you feed more hot water at ordinary times. You can give your child some cough syrup and take it orally. Or stewed pears with rock sugar, which is very effective.