Due to the imperfect development of teeth, children can not chew peanuts, melons, beans and other things, and pediatric pharyngeal reflex is not sound, easy to inhale the foreign body into the airway and the formation of tracheal, bronchial foreign body. In addition, children crying or laughing when eating can also breathe food into the airway. Some children like to carry things in their mouths, and when they cry or fall, they can inhale foreign bodies into their airways, forming tracheal and bronchial foreign bodies. The incidence is higher in boys aged 1-2 years, and school-age children are more at risk because of the large foreign bodies they choke on (such as pencil tips). Usually the foreign body types of the trachea to peanuts, melon in, beans, etc. are common, and the incidence is high from December to March every year, especially around the Chinese New Year. Guangdong area because of the habit of giving infants and children to drink soup, salty porridge, etc., animal foreign bodies are higher than in other parts of the country, to all kinds of bone pieces more, including eel fish bones most …… If the child appears intermittent choking cough or chronic cough and wheezing, after several days of ineffective medication but increasingly serious, should think of a foreign body trachea, do not hold Don’t take any chances, and make sure to seek medical attention as soon as possible. In addition, if a child gets stuck with a foreign body, he or she will have a short-term stress reaction with a strong cough, and parents should keep an eye on the child for a few days after the cough subsides. A foreign body that is inhaled into the trachea is called a tracheal foreign body. Immediately after a foreign body is inhaled, the child will choke and cough violently, with immediate redness, breath-holding and dyspnea. Subsequently, if the foreign body attaches itself to the tracheal wall, the symptoms can be temporarily relieved. If the inhaled foreign body is light and smooth, such as watermelon seeds, it often moves up and down in the trachea with the respiratory airflow. As a result, the child’s cough may still occur from time to time after the symptoms have subsided. The foreign body in the trachea may make a tapping sound when it hits upward with the airflow. If the foreign body is inhaled into the bronchus, it is called a bronchial foreign body. In the early stages, a foreign body passing through the trachea may behave like a tracheal foreign body. When the foreign body enters the bronchus, the cough may be slightly reduced. If the foreign body is vegetative, there is often fever, cough and sputum. If both bronchi of the lungs are blocked by foreign bodies, there is obvious breath-holding or dyspnea. The foreign body in the trachea or bronchus affects breathing, which can make the body lack of oxygen and increase the burden on the heart, and then cause heart failure, manifested as irritability, pale or cyanotic face, and increased heart rhythm. When the bronchial foreign body is large, it can completely block the bronchus and cause pulmonary atelectasis. When the bronchial foreign body is small, it can partially block the bronchus, and the airflow can enter the lung when the child inhales, but the gas cannot be exhaled when the child exhales, which eventually leads to obstructive emphysema. When the total airway is blocked, it can lead to immediate hypoxia, cardiopulmonary arrest, brain death and other serious consequences, among which pegs, chewing gum, multiple peanuts, etc. are the most fatal. Foreign bodies in the trachea and bronchi are life-threatening emergencies. It must be diagnosed promptly and removed as soon as possible. Foreign bodies can be removed in the hospital through bronchoscopy, etc. The key to preventing foreign bodies in the trachea and bronchus is prevention. Children should not develop the bad habit of holding things in their mouths, and should not eat foods that are not easily chewed, such as peanuts and beans. Do not cry, run or laugh while eating. Parents must accompany their children under the age of four when they eat. They should also try to avoid eating peanuts, beans, melon seeds and other foods, and if they want to eat them, it is best to crush them before giving them to their children. Try not to give young children fruits with round and smooth flesh and firm texture like raisins. In addition to dietary attention, parents should teach their children not to talk, run and walk, laugh and play while eating; teach them not to put small toys in their mouths. Parents should put small objects such as pins, needles, buttons and coins out of the reach of young children so that they do not accidentally inhale them into their airways. For school-age children, it is important to develop good hygiene habits and not to put stationery in their mouths to bite, as this unhygienic habit is also very likely to cause accidents.