If it is determined to be a cholesteatoma of the ear, the first thing to do is to have a CT scan of the ear to see if it is simply a cholesteatoma of the external auditory canal or if there is damage to the middle ear. If it is a simple cholesteatoma of the external auditory canal, it is usually not a big problem. The cholesteatoma and the epithelium of the cholesteatoma can be cleaned together under local anesthesia, and then the inside of the ear can be compressed with oil gauze to prevent bleeding and hyperplasia. However, if the cholesteatoma is in the middle ear, it needs to be incised and a major surgery is needed, otherwise the cholesteatoma will grow too large and the disease cannot be controlled, and it will also easily cause intracranial infection, which needs attention. Cholesteatoma has a certain chance of recurrence after surgery. After the surgery, it usually takes about 1-3 months to go to the hospital to clean the surgical cavity regularly before it can be done, and to use anti-inflammatory ear drops locally to actively control the infection.