Nasal polyps and nasal cancer are both relatively common otolaryngological diseases, but they belong to different types. Nasal polyps are benign lesions, which do not pose a significant risk to health, while nasal cancer is a malignant tumor, which comparatively poses a greater risk to health. In terms of examination, differentiation can be made through nasopharyngoscopy and sinus CT scans. Generally, nasal polyps tend to grow in the middle nasal passage and the olfactory area, whereas nasal cancer is more commonly found in the nasopharyngeal region or within the sinuses. Overall, these two diseases are fundamentally different, and it is advisable to visit an otolaryngologist for further examination and treatment.