Due to the fine structure and anatomical complexity of the temporal bone, as well as the different nature and scope of lesions in each otitis media patient, which determines the complexity and diversity of otitis media surgery modalities, it is important that patients have regular follow-ups after surgery. Follow-up examinations should be conducted regularly in the third week, fourth week, third month, sixth month, first year, and every year after surgery. Contents of follow-up examinations: 1. The follow-up examinations in the third and fourth weeks after surgery are very important. Since the incision in the surgical area is not completely healed, there is a risk of infection. An interview with the surgeon can detect and prevent possible postoperative infections in time; 2. The first month after surgery is an important stage in restoring the function of the eustachian tube. The recovery of the function of the eustachian tube is important to maintain good hearing after surgery; 3. Hearing check, eustachian tube function check and endoscopy should be performed in the third and sixth months after surgery. For patients with middle ear cholesteatoma, patients with otitis media whose hearing has not improved significantly after surgery or patients with otitis media whose hearing has improved but is gradually decreasing, a thin layer CT examination of the temporal bone should be performed between six months and one year after surgery to clarify the cause of hearing loss. (e.g., middle ear adhesions, artificial hearing bone displacement, eustachian tube dysfunction, cholesteatoma recurrence, etc.) and take appropriate treatment in a timely manner. Postoperative review is required every year to treat various diseases around the eustachian tube that may cause hearing loss, in addition to cleaning the cerumen of the operative cavity.