Children sleeping with cough and phlegm can be seen in physiological phenomena and pathological conditions, intervention needs to be decided according to the cause. 1. Physiological phenomenon: children in the process of sleep less activity, the respiratory tract can have secretions, easy to stimulate the cough, cough so that phlegm discharge, is a normal physiological phenomenon, the children usually do not have obvious abnormal discomfort, good spirits, usually pay attention to a light diet, drink more water. 2. Pathological conditions: such as acute bronchitis, bronchopneumonia, can appear cough, phlegm symptoms, some may be accompanied by fever, wheezing and other symptoms. Treatment should pay attention to rest, drink more water, suspected Mycoplasma pneumoniae (or bacterial) infection, need to take oral azithromycin (or cefaclor) anti-infective treatment, and the serious condition of the same time need to use inhaled glucocorticosteroids (eg, budesonide) nebulization treatment. All of the above medications should be used under the supervision of a physician, and children with sleepy coughs and phlegm are advised to seek medical attention and be evaluated by a specialist for intervention. The above medications should be used under the supervision of a physician.