Bronchoscopy in respiratory medicine is an extremely effective means of diagnosing and treating lung diseases that is relatively safe, reliable and less invasive. At work, we always hear complaints from our patients and friends that they are often anxious and fearful before the consultation and treatment, and that the intraoperative tolerance to the microscopy is particularly poor. A few patients even delay their disease because they are afraid to refuse bronchoscopy. The main reason for this is the lack of understanding of the principles, methods of operation, and methods of cooperation between patients and themselves during the procedure. If you master the basic knowledge of bronchoscopy, you will find that it is really a safe and gentle operation examination. During bronchoscopy, the examining doctor will insert a thin tube (chopstick thickness) with an electronic endoscope into the trachea or bronchus through your nose or mouth to directly observe the trachea, bronchus and lung lesions, and also remove foreign bodies from the trachea, thus assisting in the diagnosis and treatment of the disease. When tumors are suspected in the bronchus and lung, ciliary bronchoscopy can locate and remove the specimen, do biopsy and retain the image data, and also aspirate, exclude respiratory secretions and resuscitate critical patients. At the same time, fibronectomy can inject drugs into the pathological lumen of the diseased lung lobe or lung segment bronchus. To have a less unpleasant experience during the bronchoscopy, you have to follow a few suggestions from me: First, you have to trust us completely, the bronchoscopy room of the Department of Respiratory Medicine has experienced doctors and nurses, equipped with advanced diagnostic and rescue equipment to protect your health. Secondly, the day before the examination, you should submit your blood test report, clotting time report, hepatitis B test, syphilis test, ECG report, chest CT film to the doctor and nurse in the bronchoscopy room for reading, so that we can fully understand your situation and prepare for the next day’s surgery; Thirdly, the day before the examination, you should fast from 24:00 pm onwards, and abstain from water 4 hours before the examination to prevent vomiting during the operation; Fourthly, 20-30 min before the examination, we will provide you with the information about your health. Fourthly, we will nebulize your throat with 1% lidocaine 10mL oxygen 20-30 min before the examination, in order to make your pharynx and vocal folds locally anesthetized; Fifthly, if you have a removable denture, you should remove it and brush it clean and keep it properly; Patients are advised to eat 2 h after the surgery, that is, after the anesthesia in the throat has subsided. Since the anesthesia in the throat has not subsided, there is a risk of accidental swallowing of food in the trachea. If the patient feels pain in the throat for the first time, he can be given a liquid or semi-liquid diet, and then change to a regular diet when the pain disappears. Dear patients, after listening to my brief introduction of bronchoscopy, do you feel that it is not that scary for you?