Patients who have had ear surgery often take the surgery very seriously, but do not understand the post-operative consultation very well, often making it impossible to treat the disease completely and thus leading to treatment failure. Some ear diseases are prone to recurrence, especially middle ear cholesteatoma, but with good surgical quality assurance and adherence to post-operative review, the chance of recurrence is very low. Therefore, regular follow-up examinations and timely cleaning of the surgical cavity lesions to promote early epithelialization are beneficial in reducing recurrence and promoting healing. The first follow-up is usually 2 weeks after surgery, during which the surgical cavity will be thoroughly cleaned and drug changes or medications will be directed according to the condition of the surgical cavity. Then, the follow-up is usually once a month during the first six months, once every 2-3 months during the second six months, and once every six months thereafter.