The significance of nasaloscopy helps to understand the condition of nasal mucosa and nasal cavity, which is used for the preliminary diagnosis and treatment of various nasal diseases. 1. Diagnosis: During the process of nasal cavity microscopy, the structure of nasal mucosa and vascularization can be observed directly by the doctor’s eyes, which is of great significance for the diagnosis of various nasal diseases. Through the doctor’s observation, the nature of the disease can be preliminarily judged, and some pathological tissues can be extracted through nasal cavity microscope for pathological examination, and the pathological examination can accurately determine the benign or malignant nature of the disease; 2. Treatment: If an intranasal bleeding lesion is found during the nasal cavity microscopy, it can be treated by electrocoagulation, radiofrequency or low-temperature plasma technology to stop bleeding. If a smaller polyp tissue is found, the polyp tissue can also be removed for pathological examination to achieve the purpose of auxiliary treatment. Patients who have nasal discomfort symptoms, need to actively go to the hospital otolaryngology department, in the doctor’s advice, reasonable choice of rhinoscopy, standardized diagnosis and treatment.