Abstract:Congenital external and middle ear malformations are the most common birth defects of the head and face. The main clinical manifestations are abnormal auricle appearance, often accompanied by conductive or mixed hearing loss. In addition to the diagnosis, classification, and plastic reconstruction of external and middle ear malformations, the assessment and reconstruction of auditory function should also be considered simultaneously. In this paper, the development, construction process and new progress of related technologies of the diagnosis and treatment system for functional ear reconstruction of congenital external and middle ear malformations are elaborated from the aspects of the classification of auricle malformations, auricle molding, otoplasty surgery, auricle reconstruction, plasty and reconstruction techniques of the external auditory canal and middle ear malformations, and functional ear reconstruction techniques.