The bronchoscopy report includes the examination images, what is seen endoscopically, and the microscopic diagnosis. Endoscopic findings are the changes inside the airways as seen by the physician under the bronchoscope. Common microscopic diagnoses include the following: (1) normal: light red, moist and smooth tracheal mucosa; (2) abnormal: (1) pulmonary tuberculosis Common microscopic manifestations are white jelly-like granuloma tissue with rough surface, accompanied by varying degrees of bronchial narrowing, mucosal edema and thickening. Local administration of anti-tuberculosis drugs through bronchoscopy is more effective. (2) Pulmonary atelectasis The most common manifestations of the lesion site are mucosal congestion and edema, increased secretion, and other common manifestations include wall hypertrophy, lumen narrowing, erosion and obstruction. In the case of pulmonary atelectasis caused by sputum and purulent secretion obstruction, it can generally be reopened within 1-3 days after bronchoscopic suction. Inflammatory pulmonary atelectasis can be cured in most patients by bronchoscopic alveolar lavage with local application of antibiotics. (3) Tracheal and bronchial foreign bodies The doctor can directly observe the presence of foreign bodies in the trachea and bronchi under the microscope, and sometimes inflammatory secretions can be produced due to foreign body irritation. The secretions can be aspirated during the examination to fully expose the foreign body and directly clamp it.