목적: The purpose of this study was to identify the relationship between surgical success rate and improved subjective symptom in obstructive sleep apnea(OSA) patients after nasal surgery. 방법:From 2013 to 2014, twenty-seven patients(27 men) with OSA underwent nasal surgery were included. All patients had preoperative and postoperative polysomnography(PSG) and surgical success was defined as apnea-hypopnea index(AHI) <20 and a decrease in AHI by 50%. Questionnaires based on Visual Analogue Scale (VAS) about sno-ring, apnea, morning headache, tiredness, daytime sleepiness and Epworth Sleepiness Scale (ESS) were analyzed before and after surgical treatment. 결과:Only 9 patients(30%) among total 30 patients showed surgical success. However, 25 patients(83.3%) with subjective improvement of symptoms were observed in the analysis of VAS and ESS and it could be observed that there were more patients with subjective improvement of symptoms compared with the number of patients with surgical success in PSG. Otherwise, 1 patient who had surgical success did not show the subjective improvement of symptoms. 결론:Compared preoperative with postoprative PSG In OSA patients, there were much more patients with subjective improvement of symptoms despite less patients who had surgical success actually. This result shows the importance of subjective surgical success by the questionnaires rather than theoretical surgical success.