Patients with congenital and acquired auricular deficiency are not uncommon. Congenital microtia can be sculpted from autologous rib cartilage after several surgeries. However, the appearance is only a fledgling auricle and does not have a natural appearance. It is also risky and costly for the patient to have a successful surgery. For patients with severe traumatic defects of the auricle and surrounding tissues or extensive tissue excision of malignant tumors of the auricle, it is not possible to reconstruct the auricle with autologous rib cartilage due to scarring of the tissues surrounding the defect. The recently developed “cloning” technique is expected to solve the repair of auricular defects, but it is highly developed before it can finally be safely applied, and it is expensive. Since auricular repair is more about form than function, prosthetic techniques are currently an effective approach. Prosthetic techniques are not a new concept, but have only been further developed because of “osseointegration”. Osseointegration” is a technique that integrates titanium and bone together. Currently the most widely used in the medical field is dental implants, in addition to craniomandibular reconstruction, osseointegration of the reconstructed auricle is also commonly known as “prosthetic ear”. This osseointegrated fixation is firm, painless and, more importantly, non-repulsive. The use of this technique in otology has been fully promoted in Europe. Indications for this treatment: 1. Congenital small ear deformity. 2.Severe traumatic defects of the auricle and surrounding large tissues (such as burns). 3.Defects of auricular malignant tumors with extensive tissue resection. Age range: Patients aged 6 – 70 years old. Treatment plan: in two steps. Step 1: Titanium stent osseointegration. First, the correct position of the auricle is determined in the area of the auricular defect, and the site of the two titanium stud implants is determined with a healthy ear control. The titanium studs are placed into the bone to osseointegrate them using an electric drill with specific titanium placement. After 2-3 months of tissue repair, if there is no infection and the osseointegrated titanium studs are essentially fixed, the second stage of the prosthetic ear repair can be performed at this time. This procedure is performed under local anesthesia for adults and general anesthesia for children. This step requires a hospital stay of about one week. Step 2: Laboratory fabrication, blending and fitting of the prosthetic ear. The best material at present is silicone resin, which is widely used because it is easy to mix colors and coloring is stable, and it has good elasticity and easy to shape, and it also feels good to the touch. Therefore, this step is the key to prosthetic ear repair. Therefore, the maker should have good artistic quality in painting. In conclusion, the natural appearance of the ear is of particular importance to obtain an ideal prosthetic ear, and the subsequent “osseointegration” is a solid foundation for success. This step does not require hospitalization and surgery, but takes 3-5 days. Advantages of this technique: 1. The shape and color are close to the original organ. 2. The osseointegrated prosthesis is firmly fixed and does not affect physical work and normal life. 3. The osseointegration of the prosthesis is less painful and can be applied for life. Disadvantages: 1. Fake is fake, because of the lack of organ inherent expression movement and skin elasticity. 2.The prosthesis is prone to natural aging after 3-5 years. 3. The cleaning, maintenance and storage of the prosthesis are tedious. Evaluation: Currently, osseointegrated prosthetic repair of auricular defects is considered by Europe and the United States to be the least painful, most satisfying, and most acceptable treatment.