Children recently woke up in the early hours of the morning by phlegm suffocation may be due to pneumonia, bronchitis, laryngitis and other diseases, phlegm thick and sticky is not easy to cough up, blocking the respiratory tract caused by. The child’s own immune system is not fully developed, weak resistance, bacteria, viruses and other pathogens often invade the respiratory tract, resulting in children with upper respiratory tract infections, resulting in pneumonia, bronchitis and other diseases, with the development of the disease will produce a large amount of secretion, and the child’s cilia swing weak, it is difficult to discharge phlegm, it is easy to block the respiratory tract resulting in phlegm waking up. In addition, some ear, nose and throat diseases, such as rhinitis, sinusitis, laryngitis, etc., will also secrete a large amount of viscous liquid flow to the throat, so that the throat produces a foreign body sensation, resulting in phlegm waking up. Such situations must be timely medical care, under the guidance of the doctor’s advice to choose the appropriate treatment, to avoid delaying the condition.