If the patient’s pharyngeal cavity is narrow or the pharyngeal reflex is sensitive, further electronic laryngoscopy can be done to check the specific condition of the entire pharynx more carefully and comprehensively, to check the state and degree of acute and chronic inflammation of the mucous membrane of the pharynx, and to check whether there are cysts, polyps, papillomas and other benign and malignant growths in the pharynx. The patient can have a careful and comprehensive understanding of the condition of the vocal cords in particular. At the same time, patients can also undergo imaging examinations of the larynx, including CT and MRI, as appropriate, to get a more detailed and comprehensive understanding of the condition of the corresponding section of the larynx.