Recurrent cholesteatoma of the external auditory canal can be treated by surgery, endoscopic instrumental debridement, and external auditory canal irrigation. 1. Surgery: For recurrent cholesteatoma of the external auditory canal that invades the mastoid and the tympanic chamber, comprehensive surgical treatments such as mastoidectomy, tympanoplasty, and otorhinoplasty can be carried out in an attempt to remove the lesions completely, re-establish the ventilation and drainage of the middle ear and the outer ear, restore the normal structural morphology and function, and reduce the chances of recurrence. 2. Endoscopic instrument removal method: it is suitable for superficial recurrent cholesteatoma confined to the external auditory canal. Under the endoscopy, a special instrument is used to slowly penetrate into the inner side of the cholesteatoma along the wall of the external auditory canal to remove the cholesteatoma. 3. External auditory canal rinsing: If the cholesteatoma is only a mild recurrence, mixed with cerumen impaction, and cannot tolerate surgical treatment, the ear drops of sodium bicarbonate solution can be used under the instruction of the doctor, so as to soften the mass, and then rinsed and cleaned out with the help of instruments. When cholesteatoma of the external auditory canal recurs, it is necessary to go to the otorhinolaryngology department of the hospital in a timely manner, give targeted treatment under the guidance of the doctor, and follow the doctor’s instructions when using medication.