Old Li had a history of chronic suppurative otitis media for more than 20 years, and whenever his ears were abscessed, he took drops of medicine. Recently, his family and friends found that he often did not answer questions when talking with him, and only after going to the hospital for examination did they find that the chronic suppurative otitis media was complicated by sclerosis of the tympanic chamber, which affected the normal conduction of sound and led to hearing loss, and under the doctor’s persuasion Old Li had surgery, but the post-operative hearing effect was still somewhat discounted.