Cavernous hemangiomas of the external auditory canal simultaneously affecting the tympanic membrane are extremely rare. Endoscopic otosurgery has been successfully used for resecting various ear lesions because of its wider surgical field of view and minimal trauma. We report the case of a 50-year-old male patient who presented with a 6-month history of left ear congestion. Otoendoscopic examination of the left ear revealed a dark red neoplasm blocking the bony external auditory canal. After admission, surgical contraindications were eliminated, and the patient underwent otoendoscopic resection of the canal tumor. Postoperatively, the patient’s symptoms were relieved, and there was no reoccurrence during the 1-month follow-up. The tumor was successfully removed using otoendoscopy, followed by tympanoplasty.