목적: The purpose of this study was to examine the surgical findings and hearing results of stapes surgery for 100 ears by a single surgeon. 방법:We reviewed the medical records and video recordings of 100 consecutive stapes surgeries between 2011 June and 2021 June. The ages of the patients ranged from 6 to 80 years. Hearing improvements at pure- tone audiometry were defined as successful when air-bone gap (ABG) was reduced to within 20dB, and as excellent when ABG was reduced to within 10dB. 결과:The causative diseases were otosclerosis in 79 cases, ossicular anomaly in 15 cases, and otitis media in 6 cases. Pre-operative BC and AC thresholds were 31.3±14.7 and 59.6±18.8dB, respectively and ABG were 28.3±11.4dB. On average, hearing tests were followed up at 6 weeks after surgery, postoperative BC and AC thresholds were 28.6±14.4 and 39.6±18.5dB, respectively and ABG were 11.0±8.8dB. After surgery, the average ABG improved by 17.3dB. Postoperative ABG was within 10dB in 59% of cases and within 20dB in 88% of cases. When analyzed by causative disease, the result of ossicular anomaly cases was statistically significantly worse than that of other causes. Among 100 cases, stapedectomy was performed in 7 cases. When comparing the results of stapedotomy and stapedectomy, stapedotomy showed statistically better results than stapedectomy. There was no significant difference in ABG change in primary and revision cases. However, when only patients with otosclerosis were analyzed, ABG significantly less improved in the revision cases than in the primary cases. In the case of otosclerosis, postoperative ABG was within 10 dB in 66.7% and within 20 dB in 92.3%. In primary cases, ABG within 10dB was 65.7% and within 20dB was 92.9%, and in revision cases, within 10dB was 75% and within 20dB was 87.5%. 결론:Stapes surgery is effective for hearing improvement for the stapedial fixation. There was a difference in the degree of hearing improvement according to the cause of the disease