Children get up in the morning phlegm may be sinusitis, pharyngitis, pneumonia and other reasons. 1. Sinusitis: mostly caused by bacterial, viral or fungal infections of the sinuses, the child’s nasal mucosa continues to secrete a large amount of liquid, if the nasal mucus backflow to the throat, can lead to the child to appear in the morning phlegm symptoms, accompanied by headache, nasal congestion and other symptoms. 2. Pharyngitis: It may be due to the child’s daily failure to keep warm, resulting in reduced resistance, and triggered by pharyngitis, which leads to phlegm in the morning, often accompanied by sore throat, hoarseness and other symptoms. 3. Pneumonia: Mostly due to the invasion of pathogenic bacteria, leading to pneumonia, resulting in children get up in the morning sputum, accompanied by cough, runny nose and other symptoms. Children get up in the morning sputum, may also be other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or standardized treatment.