Hidden pain in the lungs after bronchoscopy, if not accompanied by other uncomfortable symptoms, mostly belong to the normal phenomenon. However, if the patient is accompanied by dyspnea, chest tightness and other symptoms, it is an abnormal situation and requires active consultation. Bronchoscopy is a method that uses a bronchoscope to enter the patient’s bronchial tubes to examine the trachea. Because this examination may cause some stimulation or damage to the mucous membrane of the trachea, after the examination, the patient may feel a vague pain in the lungs, which can be relieved after a period of time. Some patients may mistakenly think that their lungs are aching because they are highly nervous during the examination, which is normal, and the symptoms can be relieved after calming down the mind. If the patient in addition to vague pain in the lungs, accompanied by dyspnea, cough, chest tightness, arrhythmia, fatigue and other symptoms, may be the examination induced pneumothorax, or damage to the lungs, may also be induced by cardiovascular disease, such a situation is an abnormal phenomenon, we need to find out the cause of the disease in a timely manner. There are many reasons for the hidden pain in the lungs after bronchoscopy, and it is recommended that patients go to a regular hospital for relevant examinations to clarify the cause of the disease.