Patient: traumatic membrane perforation of the left ear for 3 months, ossification of the ear, large perforation of the anterior part of the tense left membrane 4MM. can it be treated without surgery? How much does it cost? The Second Affiliated Hospital of Sun Yat-sen University, Department of Otorhinolaryngology, Chen Suijun: common traumatic perforation of the tympanic membrane more than 1 ~ 3 months to heal, if the overdue is very difficult to self-healing, the need for surgical treatment, small perforation of the hospital can be repaired in the outpatient clinic. Small perforations can be repaired on an outpatient basis. Care should be taken before surgery to prevent infection caused by water ingestion. Outpatient surgery costs about 1000 RMB. The cost of outpatient surgery is about 1,000 RMB, plus 200 RMB for audiological examination. If necessary, a CT scan will be performed.