Abstract:Objective To compare the safety and efficacy of tympanoplasty under otoendoscopy and traditional microscope.Methods From December 2018 to December 2019, the medical records of patients underwent tympanoplasty were analyzed retrospectively. According to the operation mode, the patients were divided into two groups: tympanoplasty group (otoendoscopy group) and tympanoplasty group (microscope group). The risk of sensorineural deafness caused by operation (increase of bone conduction hearing threshold), the improvement of hearing by operation (decrease of air conduction hearing threshold and air bone conduction difference) and the healing of tympanic membrane were compared between the two groups.Results No statistically significant differences were observed between the two groups regarding surgical effect, hearing restoration before and 3 months after surgery. The average hearing improvement following surgery were similar between the two groups. ET resulted in the successful healing of 89.5% of ear drums, whereas MT led to successful healing in 91.7% of cases.Conclusion Endoscopic tympanoplasty can achieve the same effect as microscopical tympanoplasty in three aspects: safety of operation, improvement of hearing and success rate of tympanoplasty. It can increase clinical application and promotion.