목적: This study aimed to compare the outcome of type I tympanoplasty according to the layer of tragal perichondrium. 방법:This retrospective study encompassed 88 patients (33 males and 55 females) who underwent Type I tympanoplasty using tragal perichondrium as a graft material at Samsung Changwon Hospital from March 2016 to July 2022. The subjects were categorized into two groups: Group A, wherein the fibrous layer of the tragal perichondrium was oriented outward, and Group B, where the chondrogenic layer was facing outward. A comprehensive on-year follow-up was conducted, and an extensive comparative analysis was performed. Parameters examined included age, gender distribution, surgical site, disease progression timeline, preoperative air-bone gap (ABG), surgical duration, audiometric improvements, wound healing efficacy, and the incidence of postoperative complications. 결과:There were no significant differences between two groups in other parameters. However, the risk of developing myringitis after surgery was found to be 2.925 times higher in group B. 결론:When conducting tympanoplasty with tragal perichondrium, orienting the fibrous layer, which constitutes the outermost layer, outward can lead to a reduction in the incidence of postoperative myringitis.