Objective To report the clinical data of a patient with a primary psamyoma meningioma in nasal cavity-paranasal sinus and review the related literature,in order to improve the clinical diagnosis and treatment level of the disease.Methods The patient, a 50-year-old female, was admitted to the hospital for "progressive right-sided nasal obstruction for more than one year". Preoperative imaging examination revealed irregular space-occupying lesions in the right nasal cavity and ethmoid sinus, and the mass was removed under general anesthesia and endoscopy.Results The tumor was completely resected,and the mass was diagnosed for Psamyoma Meningioma (WHO grade I) by postoperative pathology and immunohistochemistry.The patient’s nasal obstruction and headache symptoms disappeared, and the epithelialization of the mucosa in the nasal cavity was completed at the follow-up 2 months after the operation. There was no adhesion in the nasal cavity, and no tumor recurrence was found.Conclusion Ectopic Psamyoma Meningioma originating in the nasal cavity and paranasal sinuses is rare. The disease lacks specific clinical manifestations,which is easily misdiagnosed. Diagnosis mainly depends on pathological examination, and treatment should strive for a complete resection of the tumor and the surrounding invaded tissue, in order to achieve a radical cure and prevent recurrence.