Abstract: Microtia is the second most common congenital craniofacial disease in China, mainly manifested as auricle hypoplasia, partly combined with external auditory canal stenosis or atresia, middle ear malformation. Over the years, auricle reconstruction has been a great challenge for plastic surgeons because of its complexity and precision. In ear reconstruction, autologous costal cartilage transplantation and Medpor stent implantation are the two most commonly used methods, both of which have limitations. In recent years, the auricle construction model with tissue engineering and 3D printing as the core technology has also achieved certain research results, providing new possibilities for the treatment of microtia in the future.

Key words: Auricular reconstruction, 　Scaffold constructs, 　Tissue engineering, 　3D broprinting