Otitis media and trauma are the most common causes of tympanic membrane perforation. Most long-term non-healing tympanic membrane perforations require repair to improve hearing and prevent recurrent otitis media and cholesteatoma formation. Traditional tympanic membrane repair surgery is performed under a microscope. The advantage of this surgical method is that the surgeon has three-dimensional vision, but the disadvantage is that the linear field of view of the microscope makes it impossible for the surgeon to see the full picture of some perforations, especially those in the anterior portion of the tympanic membrane, and therefore, it is necessary to make a posterior or an internal incision to pull the soft tissues of the external auditory canal, or even need to abrade a portion of the external auditory canal’s bone in order to completely expose the site of the perforation to repair it, which increases the risk of side injuries and postoperative pain. This increases the patient’s collateral damage, postoperative pain and recovery time. Xuanwu Hospital of Capital Medical University, Department of Otorhinolaryngology-Head and Neck Surgery, Ding Xiuyong Otoscopic tympanic membrane repair technique is operated through the external auditory canal by an endoscope with a diameter of 3-4mm, which has the following advantages compared to microscopic tympanic membrane repair. Secondly, because of the wide-angle view of the endoscope, it is convenient for the surgeon to know the situation of the auditory ossicles and the Eustachian tube tympanic orifice, which is technically more advantageous for the improvement of hearing and the prevention of re-perforation; thirdly, the surgery is operated in the external auditory canal, which is less invasive and does not need to stretch the surrounding tissues, which is less traumatic and less painful, and the recovery is more rapid.