Treacher-Collins syndrome(Franceschetti-Zwahlen syndrome) is malformation of the maxilla, mandibulofacial dysostosis, anti-mongoloid, micrognathia, bony meatal atresia, and malformed malleus and incus due to embriologic developmental arrest. It is very rare disease which was first presented by Dr. Berry in 1889, and later became syndrome by Dr. Treacher-Collins in 1900. A case of 24 year old male patient was admitted to this hospital on the 25 Mar., 1969, with the chief complaints of loss of hearing, and speech disturbance attributable to microtia, meatal atresia, and poor maxillary and mandibular development, and cleaft palate. With the avilable examinations, and references, he was confermed to have ""Treacher-Collins syndrome.""