Bilateral auricular defects are caused by trauma or infection, and have their own characteristics when compared with tissue defects in congenital microtia, such as localized skin is often scarred, with poorer blood supply, elasticity, and laxity. It is not possible to make a thin subcutaneous extensive peeling, it is not easy to form a wide and loose cavity that can accommodate the implanted stent tissue, therefore, it is often difficult to clearly show the contour shape carved on the stent. Bilateral auricular defects can be caused by trauma, burns, and tumor resection. Diagnostic methods: 1, a history of trauma or infection or surgical resection of tumors; 2, auricular defects, the surrounding skin often has more scars, poor elasticity, blood supply, and degree of looseness; 3, often residual part of the ear nails and external auditory canals; 4, can be combined with other deformities. Prevention and treatment methods: 1, surgical treatment: the whole auricle reconstruction. 2, reconstructing the skin source of the auricle, the first use of the skin of the mastoid region behind the ear, not enough when the feasible skin expansion or other methods. 3, auricle bracket, can be autologous cartilage or other materials. It is extremely important that the scaffold is sculpted into the shape of the auricle.