There is no such thing as not recommending laryngoscopy for young people. Laryngoscopy is divided into indirect laryngoscopy, fiberoptic laryngoscopy and electrolaryngoscopy, direct laryngoscopy and supportive laryngoscopy, etc., each with different characteristics. 1. Indirect laryngoscopy: Indirect laryngoscopy is the most commonly used method. During the examination, the other party needs to sit upright, open the mouth, stretch the tongue, and the examiner sits on the opposite side of the table, and then adjusts the focus of the reflected light to the vicinity of the uvula with a reflective frontal mirror. Then wrap the tongue with gauze anterior 1/3, check the time to catch the laryngoscope after alcohol sterilization into the other side of the mouth, the mirror down, the back of the mirror will be the uvula and the soft palate pushed to the upper back. 2. Fiber laryngoscope and electronic laryngoscope: fiber laryngoscope is a soft endoscope made of light-conducting glass fibers. The advantages are bendable, bright and wide field of view. After surface anesthesia of nasal cavity, oropharynx and laryngopharyngeal mucosa, fiber laryngoscope is introduced from nasal cavity to reach laryngopharynx through nasopharynx, oropharynx, and it can be used to perform biopsy, polyp removal, and foreign body removal surgery, etc. It is connected to a monitor to display images. 3. Direct laryngoscope and support laryngoscope: direct laryngoscope can be performed under local anesthesia and general anesthesia, rigid tubular endoscope is placed into the laryngeal cavity for examination and operation, and the laryngoscope is connected to a support frame for durable and stable exposure. It should be noted that laryngoscopy cannot be accepted if there is cervical spondylosis, tuberculosis, dislocation, or trauma. And the examination needs to go to a regular medical institution to avoid causing adverse complications.