Airway management in critically ill children is one of the key and difficult aspects of severe rehabilitation care.Children′s respiratory tract is relatively narrower, when bronchitis and other diseases occur, a large amount of viscous sputum is secreted, which is more difficult to discharge.Therefore, it is easy to cause airway obstruction, respiratory muscle weakness, lung consolidation and decreased coughing ability, which can aggravate the underlying pathological damage and increase the risk of death.Thus, according to the age of the child, the severity of the disease, the price of the treatment, the location of the removal, and the comfort and compliance of the method, it is critical to find the suitable and effective airway clearance solution to help clear airway secretions in time.