OBJECTIVE To evaluate the efficacy of otoendoscopic stapes surgery.METHODS From December 2020 to May 2023,a retrospective analysis was performed on 29 patients who underwent otoendoscopic stapes fenestration and artificial stapes implantation were diagnosed with otosclerosis during the operation.The medical history data of the patients were collected and analyzed.RESULTS In the period examined,44 stapes surgical procedures were performed and out of these 29 met the inclusion criteria.All patients were performed under otoendoscopy.There was no significant change in bone conduction threshold(P>0.05),but the average air conduction threshold improved from the preoperative(59.91±10.25)dB HL to(38.92±11.37)dB HL with air-bone gap reduced from the preoperative(37.37±7.65)dB HL to(18.71±8.38)dB HL(P<0.05).There were no serious complications such as sensorineural hearing loss and facial paralysis,but 22 patients were accompanied by varying degrees of vertigo,which were relieved after symptomatic treatment.CONCLUSION Endoscopic stapes surgery is a safe procedure with a low risk of peri-or postoperative complications,and can improve the air conduction hearing of otosclerosis patients.