Studies have shown that the majority of patients with congenital microtia are accompanied by abnormal development of the auditory ossicles on the affected side of the ear and have poor hearing, and that opening the external auditory canal does not significantly improve the recovery of hearing, and that most of the normal side of the patients with unilateral microtia has normal hearing, which can completely compensate for the lack of hearing on the affected side. In addition, at present, most of the external auditory canal reopening surgeries use skin grafting, and there exists the possibility of reattachment of the external auditory canal at a later stage due to contracture of the skin sheet, and if the sewage from the bath enters into the reconstructed ear canal, there may be a foul-smelling condition of the ear canal. Therefore, the most popular international method is to deepen the auricular cavity while restoring the shape of the auricle by total ear reconstruction, which can achieve the same appearance as opening the ear canal. Unless it is a bilateral microtia, patients with significant hearing loss should consider ear canal reconstruction, cochlear implantation and other techniques to restore part of the hearing, but the surgery must also be carried out after the auricle reconstruction, otherwise, if the local tissues have been damaged, the difficulty of the auricle reconstruction is greatly increased, and even necrosis of the reconstructed ear may occur, the possibility of failure of the surgery.