A foreign body in the airway is usually a foreign object that enters the trachea or bronchus. The trachea and bronchi are the channels of breathing, and if a foreign body is large enough to block the trachea, the patient can die within minutes due to suffocation; if it blocks the main bronchi, severe breathing difficulties can also occur. Therefore, people, especially children, must pay attention to prevent foreign bodies into the airway, such as do not heckle when eating, do not talk when swallowing, do not contain foreign bodies in the mouth, do not throw food, do not swallow the whole food such as jelly, peanut rice directly, etc., to avoid the occurrence of foreign body inhalation of the airway, life-threatening.