The steps of the electronic nasopharyngoscopy are as follows: 1. Before the examination: local anesthetic drugs, such as lidocaine, need to be used in the nasal cavity and on the mucosal surface of the throat. 2. 3, after anesthesia preparation: the examiner holds the electronic nasopharyngoscope, enters from the front of the patient’s nasal cavity, gradually penetrates into the nasopharynx, and then further down, probes into the pharynx, carefully and comprehensively observes the entire nasopharyngeal condition.