The symptoms caused by the malignant transformation of nasal polyps mainly involve significant destruction and invasion of the surrounding bone, leading to the destruction of the skull base and orbital tissues. Patients may experience eye pain, decreased vision, headaches, and bleeding. For patients with malignant transformation of nasal polyps, diagnosis is primarily made through an electronic nasopharyngoscopy biopsy, taking a portion of the pathological tissue for confirmation. Typically, after confirming malignancy, functional endoscopic sinus surgery should be performed promptly to remove the malignant nasal polyp tissue and extend the resection to the invaded bone. This is usually complemented by radiation therapy or chemotherapy to prevent recurrence of the malignant nasal polyps.