There are many reasons for children coughing up mucus, such as respiratory tract infections, chronic pharyngitis, acute rhinitis and other diseases, need to choose the treatment according to the cause of the disease. 1. Respiratory tract infections: due to children’s immunity is relatively weak, easy to trigger the bronchial tubes, lungs and other bacterial infections, which can cause increased secretions, accompanied by coughing, coughing mucus phenomenon, you can use antibacterial drugs such as cefixime and other antibacterial drugs under the guidance of the doctor for treatment, can effectively alleviate the symptoms. 2. Chronic pharyngitis: due to the dry climate, improper diet, eating some stimulating food, etc., easy to cause inflammation of the throat, there will be sore throat, coughing phlegm and other phenomena, can be under the guidance of the doctor orally clearing the throat and sharp pharyngeal granules, Yinhuang drip pills and other medicines, can alleviate the symptoms. 3. Acute rhinitis: due to lack of vitamins, do not pay attention to warmth, low immunity and other diseases caused by rhinitis, there will be nasal congestion, sneezing, coughing and other phenomena, you can use ephedrine nasal drops, naphazoline hydrochloride nasal drops under the guidance of a doctor, can effectively relieve the symptoms. All of the above drugs should be used under the guidance of a doctor, avoid self-medication. There are many other reasons why a child coughs up a puddle of mucus, and it is recommended that you seek prompt medical attention and be evaluated and treated by a specialist.