Chronic suppurative otitis media with a history of intermittent or persistent ear discharge, conductive or mixed hearing loss on audiometry, and inflammatory tympanic chamber or mastoid lesions on temporal bone CT. (1) Tympanic membrane perforation, purulent discharge visible in the tympanic chamber, mucosal swelling, thickening, granulation or cholesteatoma formation; (2) Tympanic membrane invagination with middle ear cholesteatoma, the presence of either or both of these should be operated as soon as possible. Examination and treatment: 1. Examination items: routine examination + specialist examination + other relevant examinations according to the patient’s specific condition; specialist examination includes: clinical audiological examination (eustachian tube function examination and tympanic membrane patch test); otoscopic examination: local preoperative treatment, medication and clarification of the scope and nature of the lesion. High-resolution CT of temporal bone, axial + coronal CT. 2.Bacterial culture of middle ear pus + drug sensitivity and determination of facial nerve function are required for some patients. 3.Surgical treatment, usually 2-4 days after admission, general anesthesia or local anesthesia, depending on the patient’s condition: (1) tympanic exploration + tympanoplasty; (2) open mastoid radical treatment + tympanoplasty (3) complete wall mastoid radical treatment + tympanoplasty; (4) second stage auditory chain reconstruction. (4) Second-stage ossicular chain reconstruction. The implantation supplies that may be used during the operation are artificial auditory bone implants, and the specimens are sent for pathological examination. 4.Post-operative Review all relevant examination items according to the patient’s condition, post-operative application of antibacterial drugs, wound dressing change, etc. 5.Discharge Patients with good wound healing, no special, no complications can be discharged. The hospitalization time is about 10-14 days.