Abstract:Objective To explore the efficacy of nasal endoscope in treatment of different types of sinusitis, observe the changes of nasal function, sense of smell and the morphology of paranasal sinus mucosa after operation, and evaluate the postoperative effect.Methods 100 patients with sinusitis were selected from June 2019 to June 2020. According to the results of pathological examination, the patients were divided into infection group (n = 54) and allergic group (n = 46). Both groups were treated with Messerklinger. Two months after operation, the curative effect, nasal airway resistance, distance of minimal cross-section area from nostril (DCAN), nasal minimal cross-sectional area (NMCA), nasal cavity volume (NCV), sino-nasal outcome test-20 Chinese Version (SNOT-20 CV) score, Lund-Kennedy score and pathological morphology of nasal mucosa were evaluated.Results Both groups achieved good therapeutic effect. Among of them, the total effective rate of the infection group was significantly higher than that of the allergy group (P < 0.01), the nasal airway resistance, DCAN, NCV and NMCA of the infection group were better than those of the allergy group (P < 0.05), SNOT-20 CV score and Lund-Kennedy score of the infection group were lower than those of the allergy group (P < 0.05), and the nasal mucosa morphology of the infection group was better than that of the allergy group (P < 0.05).Conclusion The postoperative nasal function, sense of smell and morphological recovery of nasal mucosa in infected patients are better than those in allergic patients. Both infective and allergic sinusitis patients achieved good results after endoscopic sinus surgery, which significantly improved the quality of life of the patients, but the allergic factors leading to recurrence should not be ignored.