Genetic factors are the main contributors to bilateral auricular dysplasia. Congenital and birth trauma are also etiologic factors. The causative factors are swimming, showering, prolonged pus in the middle ear, and inappropriate medication drops in the ear. As a result, prolonged moisture in the external auditory canal, combined with a warm environment, makes it easy for fungi to grow. In addition, ear digging injury is also one of the important factors secondary to this disease. If the local skin is often scarred, the blood supply, elasticity and relaxation are poor. It is not possible to make a thin subcutaneous extensive peeling, it is not easy to form a wide and looser cavity that can accommodate the implanted stent tissue, therefore, it is often difficult to clearly show the contour shape carved on the stent. Examination related to bilateral auricular hypoplasia: General examination method of the ear: there are outer ear examination and otoscopy, outer ear examination includes auricular examination, external auditory canal examination, tympanic membrane examination. Through the above examination, the condition of the ear is observed. Clinical mainly includes outer ear examination method and tympanic membrane examination method. For the general physical examination, the right ear is examined first and then the left, and the patient’s ear is examined after the less severe ear in order to avoid cross-infection. External Ear Examination: Observe the external ear canal, auricle, and tympanic membrane for cerumen, foreign bodies, and bacterial infections to determine whether the disease has arisen. The examinee sits sideways, with the auricle facing the examiner; the examiner projects the focus of the frontal lens reflection onto the examinee’s external auditory canal first. When adjusting the focus, the examiner can move the head forward and backward so that the brightest point of light is projected on the examined area. Auricular Examination: The examination is based on auscultation and palpation. The patient sits sideways, the examined ear toward the physician, observe the auricle for deformity, limited bulging, thickening and skin for redness, swelling or cracks, and the periauricular area for redness, fistula, scarring, etc. Then check the auricle for pulling, swelling and cracking, and then check the auricular area for pulling. Then check the auricle for pulling pain, the ear screen and mastoid area for pressure pain, and check for fluctuating sensation if there is swelling behind the ear. 1.Laboratory tests and systematic examination to see if there are any comorbidities. 2.Detailed local examination and recording of image data from all angles. 3.Chest X-ray and CT film are required for those who are going to use ear stent material for repair.