In this survey of the postoperative therapeutic performance of 555 cases of nasal surgery, particularly conservative fiberscopic endonasal sinusectomy, it was found that conservative nasal operations accounted for 87.8% of the entire sample population and the therapeutic effects, (in terms of subjective symptoms) were found to be favorable in 91.5% of cases. These results suggest that conservative nasal operations will become the dominant form of nasal surgery in the future.