Coughing up sputum refers to the expulsion of respiratory secretions from the mouth through the impulse of airflow when coughing. Coughing up sputum is one of the important signs of respiratory diseases, but also a process in the course of coughing, the child’s mother and father should help the child to expel sputum in a timely manner. 1.Environment: Reduce exposure to second-hand smoke, pollen, spices and other irritants, keep the air fresh and appropriate temperature and humidity, and remove triggering factors. 2, diet: advise the child to drink a moderate amount of warm water, moisten the airway to reduce respiratory tract stimulation; avoid spicy or gas production and other stimulating foods. 3.Airway: moistening the airway is more effective if it can be combined with nebulization inhalation therapy; nebulization of the child at the same time to assist in the expectoration of sputum: from the bottom to the top of the beat, in the bottom of the lungs on both sides of the child’s empty heart patting the back, the application of the wrist force, so that sputum from the fine bronchioles to the large trachea, in order to facilitate secretion discharged from the respiratory tract. 4, phlegm does not stop coughing: children with more phlegm should not use strong cough suppressants, because phlegm retention may interfere with or damage alveolar ventilation, resulting in a decline in the lung’s ability to fight infection. To avoid asphyxia. If the child coughing sputum course of fever, nasal congestion, recurrent cough, asthma and other persistent, serious or progressive signs and symptoms must be timely medical treatment.