Chronic suppurative otitis media is a common and frequent clinical condition. The degree of hearing loss is usually related to the area of the tympanic membrane perforation and the degree of the accompanying small bone lesions. In chronic suppurative otitis media, although the inflammation is controlled and the water or pus in the ear stops flowing, the hearing loss remains because the tympanic membrane perforation does not heal and the hearing bone may be impaired or absent. In addition to hearing loss, this disease often causes re-infection of the middle ear and pus in the ear due to bathing or swimming with water in the ear. Therefore, when there is no acute infection in the middle ear, you should come to the hospital early to receive surgical treatment such as tympanic membrane repair. The purpose of surgical treatment is twofold: 1. After tympanic membrane repair, the pathway of middle ear infection through the ear canal is blocked, so if the surgery is successful, the suspicion of middle ear infection caused by ear irrigation or swimming can be completely eliminated after surgery; 2. However, the degree of improvement depends on the patient’s preoperative otitis media in addition to the surgeon’s skill. In conclusion, patients with chronic suppurative otitis media should undergo surgery early in order to prevent infection and improve their hearing.