Nasal polyps do not normally cause cancer, but they can be carcinogenic if they appear as atypical nasal polyps or are accompanied by atypical epithelial hyperplasia. Nasal polyps are relatively common, are a non-neoplastic disease, and are the most common lesion of the upper respiratory tract. Most of the patients are above 30 years old, and it is relatively rare before 20 years old. It is often caused by allergy, infection, and mucus retention, mainly in the middle nasal tract and olfactory region, etc. Although it can be solitary, it is predominantly multiple, mostly involving both sides, or it can fill the whole nasal cavity or extend to the posterior or anterior nostril. According to different histomorphological characteristics, nasal polyps are mainly divided into inflammatory polyps, vasodilatory polyps, posterior nostril polyps, cystic fibrosis polyps, and so on. Usually, surgical excision is the main treatment in the clinic, and close follow-up after surgery to prevent recurrence. If long-term friction, prolonged, some of them can cause atypical hyperplasia, which may lead to cancer, and it is recommended that patients must be actively treated.