Lung intubation is often called bronchoscopy, and bronchoscopy often plays a very important role in the diagnosis and treatment of lung diseases. The examination can be used to diagnose lung diseases, such as pneumonia, tuberculosis, lung tumors, etc. Bronchoscopy can be used to find out the cause of the disease, and it can be used to conduct brushing, biopsy, and laboratory tests of lavage fluid, etc., which is conducive to the diagnosis of the patient; sputum can also be taken from the lungs under the bronchoscope for laboratory tests to find out the cause of the disease. In addition, bronchoscopic treatment can be given, including the treatment of tuberculosis, tumor, fungus, etc.; bronchoscopic microwave therapy, cryotherapy, balloon dilatation, etc.; bronchoscopic stenting can also be performed.