The first follow-up is usually about 1 week after discharge from the hospital, often the post-operative care week, when the doctor will perform a thorough cleaning of the operative cavity and instruct a change of medication or spotting according to the condition of the operative cavity until the wound heals. Then, the first month is followed up every two weeks in the outpatient clinic, then generally once a month for the next six months, then once every 2-3 months for the next six months, and once every six months thereafter. Many ear patients who have undergone ear surgery often attach great importance to the surgery, but do not understand the post-operative follow-up, which often prevents the disease from being completely treated, resulting in treatment failure and the need for another surgery. Most ear diseases are prone to recurrence, especially middle ear cholesteatoma, but if one insists on post-surgical follow-ups with good surgical quality, the chances of recurrence are very low. In order to reduce recurrence of the disease, in addition to successful ear microsurgery, post-operative follow-up is very important. Therefore, it is necessary to see the doctor for regular review, who will guide the medication according to the condition of the operated cavity and promptly clean the diseased tissue to promote early epithelialization of the operated cavity, thus reducing recurrence and achieving cure.