4-year-old baby coughing throat phlegm may be upper respiratory tract infection, pharyngitis and other diseases caused by, can take general care, medication. 1. Upper respiratory tract infection: children with upper respiratory tract infections may have coughing, phlegm in the throat and other symptoms. Viral infection is more serious can take four seasons of antiviral combination of treatment, the presence of bacterial infection can be prescribed oral cefaclor dry suspension antibiotic treatment, if the phlegm is thick and sticky, you can also take oral aminobromine hydrochloride oral solution expectorant medicine treatment. 2. Pharyngitis: The main symptoms of pharyngitis are dryness of the pharynx, coughing up secretions, foreign body sensation and so on. Parents can follow the doctor’s instructions to the child using mometasone furoate nasal spray and other glucocorticoid nebulizer inhalation treatment. In addition to medication for coughing up phlegm in the throat, it is also important to keep the child warm and avoid exposure to cold. Eat a light diet, drink more water, do not eat spicy stimulating or allergic food, indoor temperature and humidity. 4-year-old baby coughing throat phlegm may also have other causes, such as bronchitis, pneumonia, etc., parents should take their children to the doctor in a timely manner, to clarify the cause of the disease, and follow the doctor’s instructions for treatment.