Cryptogenic ear, also known as buried ear and pocket ear, is a congenital developmental malformation of the auricle. The main manifestation is that the upper part of the auricle is buried under the skin of the temporal scalp and there is no obvious postauricular groove. If the upper part of the auricle is pulled outward by hand, the full shape of the auricle can be revealed, but when it is released, the tension of the skin and the elasticity of the cartilage make it return to its original shape. Non-surgical treatment can be tried for infants under the age of 1 year. A special correction device is made according to the shape of the upper part of the auricle, which is then fixed to the upper part of the auricle and kept in a state of continuous pulling, so that the tense skin there gradually relaxes and reveals the shape of the auricle. After the age of one, surgery is recommended. Adults who require correction can generally be operated on. In children, the surgery must be done under general anesthesia, and bilateral crypt ear should be done in one operation; in adults, the surgery can be done under local anesthesia. Therefore, the principle of surgery is to cut open the skin so that the buried auricular cartilage can be fully exposed and the resulting wound can be covered by free skin graft or local flap transfer. In patients with severe occluded ears, the ear cartilage is often underdeveloped or combined with other deformities, so appropriate correction should also be performed.