Nasal polyp is a common disease in ENT, the color is mainly grayish-white or light red, pink, and its shape is like the lychee meat usually eaten, which is a translucent swelling. It is a translucent swelling, which can be touched with a probe during a physical examination, and the patient will not feel any pain because there are no nerves in the nasal polyp and the polyp itself does not bleed easily. Nasal polyps are caused by unexplained stimuli, and are now mainly thought to be related to inflammation, infection, allergy and other factors, leading to chronic diseases of the nasal cavity and sinus mucosa, mainly due to the occurrence of extreme pathologic edema of the nasal mucosa and the formation of single and multiple polyps in the nasal cavity.