目的　报道应用显微外科技术治疗慢性中耳炎鼓室硬化的临床疗效。　方法　采用外耳道筒状皮肤连同鼓膜鼓室上皮层剥离 ,清除鼓室硬化病灶 ,重建听骨链 2 5例。　结果　 2 5例中 7例显效 ,15例有效 ,总有效率 88% ,无 1例人工鼓膜穿孔 ,效果良好。　结论　显微外科手术能彻底清除鼓室硬化病灶 ,重建听骨链 ,避免人工鼓膜再穿孔 ,是治疗鼓室硬化的较好方法 Objective To report the clinical effect of microsurgical treatment of tympanosclerosis in chronic otitis media. Methods The external auditory canal skin was excised together with the tympanic membrane epithelium to remove the tympanosclerosis lesions and reconstruct the ossicular chain in 25 cases. Results of 25 cases, 7 cases markedly effective, 15 cases were effective, the total efficiency of 88%, no one case of artificial tympanic membrane perforation, the effect is good. Conclusion Microsurgery can completely remove the tympanosclerosis lesions, rebuild the ossicular chain and avoid the re-perforation of the artificial tympanic membrane, which is a good method for the treatment of tympanosclerosis