Paying attention to the treatment of external auditory canal cholesteatoma External auditory canal cholesteatoma is a relatively common otologic disease that patients do not find serious and many doctors find simple, but I believe that external auditory canal cholesteatoma must be taken seriously, and careless treatment can bring many problems that must be handled carefully to eliminate future problems. 1. It is easy to be misdiagnosed as ear canal cerumen embolism and given cerumen water immersion, which will instead aggravate the swelling and induce pain, and must be discontinued in time for surgery. 2. It is the surgery and to deal with the narrow external ear canal, especially the swollen and granulomatous external ear canal, otherwise it will cause narrowing of the external ear canal and even atresia! It brings great trouble for the follow-up treatment. 3. That is, for the treatment of external auditory cholesteatoma that invades the middle ear and mastoid process, there are many differences as to whether to make a postauricular incision, how to deal with the posterior wall of the external ear canal and how to deal with the mastoid bone, which need to be decided by combining the CT of the middle ear and what is seen intraoperatively, and some even need a second operation. Therefore, a clear diagnosis, proper management and follow-up are crucial to the prognosis of the disease.