目的　报道显微镫骨切除术方法改进后用于治疗薄板型镫骨型耳硬化症的经验。　方法　镫骨底板部分或全切除后 ,采用自体颞筋膜铺于窗龛表面而不是窗龛内封闭前庭窗 ,使前庭池增大 ,筋膜与豆状突间距离缩短 ,以减少术后移植物陷入压迫前庭的危险 ;利用镫骨头和前脚或后脚连接筋膜与豆状突 ,避免使用活塞型人工镫骨或钢丝筋膜垫可能造成的砧骨豆状突坏死。　结果　 2 2例此类病例中 ,术后气骨导差 (5 0 0、10 0 0、2 0 0 0和 40 0 0Hz)在 10dB以内的有 2 1例 ,随访 1～ 3年无改变。　结论　改进的显微镫骨切术的手术方法操作简单、易于掌握 ,短中期疗效确切 ,是一种值得进一步推广应用的手术方法 Objective To report the improvement of the method of microstomy for the treatment of thin plate tarsal otosclerosis. Methods After the partial or total resection of the sternum floor, the autonomic temporal fascia was placed on the surface of the window niche instead of the closed vestibular window in the niche to increase the vestibular pool and shorten the distance between the fascia and the bean so as to reduce the postoperative transplantation Objects into the pressure vestibular danger; the use of the bones and the front foot or foot to connect the fascia and bean, avoid the use of piston-type artificial tarsal or steel fascia may cause anodosis necrosis. Results In 21 cases of these cases, there were 21 cases with less than 10 dB of airway deformity (500, 100, 200, 200 and 400 Hz). No change was observed in 1-3 years after follow-up. Conclusion The improved operation method of micrognathicotomy is simple, easy to grasp, short-to-medium effect is exact, it is a surgical method worth further popularization and application