Most diseases, such as nasal polyps, cannot be completely treated, and only symptoms can be alleviated. 2, intranasal ethmoidectomy, using this operation to treat nasal polyps, if thorough, can greatly reduce the recurrence rate of nasal polyps, surgery makes it necessary to fully open the ethmoidal sinus cavity, and then completely remove the polyps in the ethmoidal sinus. 3. Simple nasal polypectomy is used to treat nasal polyps. Simple nasal polypectomy is mainly to remove the pedicle. It is suitable for patients who have not undergone nasal polypectomy before. If the patient's intraethmoidal mucosa has polypoid changes, it is necessary to perform intranasal ethmoidectomy at the same time. 4. It is an ideal method to treat nasal polyps at present, and it is praised as a revolutionary progress in sinus surgery. Because nasal polyps are not only confined to the nose, but also can invade the surrounding sinuses, the traditional method of removing nasal polyps with snare is easy to recur. Endoscopic surgery can not only reach the deep and hidden parts and completely remove nasal polyps, but also reduce the recurrence rate of nasal polyps through surgical operations that conform to human physiological functions.