Objective To investigate the clinical application and curative effect observation of nasal endoscopic surgery in secondary sinonasal inverted papilloma from external injury. Method A retrospective analysis was performed in fourteen patients with sinonasal inverted papilloma who were operated by endoscopic surgery. Result There was no recurrence after follow up 2-24 months. Conclusion The nasal endoscopic surgery is a effective remedy to nverted sinonasal papilloma,and external injury is one of the important stimulating factors for inverted papilloma.