When the trachea is blocked but it is not known whether it is a foreign body or a new organism such as a tumor, it can be judged by combining symptoms and examinations such as electronic bronchoscopy. 1. Symptoms: If caused by a foreign body, usually there is a history of inhalation of the foreign body, sudden violent cough, breathlessness, or even suffocation, and then after the foreign body is retained in the corresponding size of the trachea and bronchus, the symptoms will disappear or there will be only a slight cough. If caused by a new organism, it usually manifests as a mild cough in the early stage, and may be followed by irritating dry cough, shortness of breath, wheezing, dyspnea and other symptoms in the later stage. 2. Electronic bronchoscopy: At the same time, a clear diagnosis can be made through electronic bronchoscopy, which can directly observe whether there are foreign bodies, inflammation, neoplastic organisms, etc. inside the trachea. Tracheal blockage can also be caused by other diseases. It is recommended that the patient should consult the doctor as soon as possible, under the guidance of the doctor for further examination to clarify the diagnosis, and follow the doctor’s instructions for treatment.