Laryngoscopy can check the disease conditions in the throat, such as laryngitis, pharyngeal cysts, vocal cord nodules or polyps, pharyngeal tumors and other diseases. 1. Laryngitis is characterized by congestion of the mucous membrane of the throat, vasodilatation, redness and swelling of lymphoid follicles under laryngoscopy. It can be treated by using heat-clearing and detoxifying Chinese medicines. 2. Pharyngeal cysts appear as hemispherical elevations on the surface of the throat under the laryngoscope, with smooth surface and yellowish color. It can be treated by surgical excision. 3. Vocal cord nodule or polyp is characterized by the presence of new organisms on the surface of the vocal cord under the laryngoscope, with smooth surface, affecting the closure of the vocal cord. It can be treated by medication or surgical excision. 4. Pharyngeal tumors can be seen as cauliflower-like or nodular new growths on the surface of pharynx under laryngoscopy, which are ulcerated, bleeding and dark in color. It is treated by surgery or radiotherapy. In the above cases, consult a doctor as soon as possible to clarify the cause of the disease and follow the doctor’s instructions.