The difference between a tracheal foreign body and a bronchial foreign body is that the location of the foreign body is different and the symptoms are different. 1. Tracheal foreign body: the foreign body stays in the trachea. When the foreign body enters the trachea, it immediately causes violent choking and coughing, with symptoms such as breath-holding and dyspnea. With the foreign body attached to the wall of the trachea, the symptoms can be temporarily relieved; if the foreign body is light and smooth and move up and down with the respiratory airflow, irritating cough can occur; if the foreign body is large and obstructs the trachea, it may go up to the vocal folds at any time and cause respiratory distress or suffocation. 2. Bronchial foreign body: bronchial foreign body is located in the right side of the bronchus is common. If the foreign body is on one side of the bronchus, the symptom of respiratory distress is not serious; if it is on both sides of the bronchus, there may be respiratory distress, and respiratory sounds will be reduced or disappeared. Bronchial foreign bodies can also cause obstructive emphysema, obstructive pulmonary atelectasis, lung inflammation and other complications. It is important to note that whether it is a tracheal or bronchial foreign body, immediate medical attention should be sought to prevent asphyxia hypoxia and complications.