Total ear reconstruction's operation method is to implant a water-filled expansion bag under the skin of the ear reconstruction site, and after implantation, water is injected into the bag at a certain time and frequency to expand the skin around the expansion bag. It usually takes three months to prepare the skin needed for the second stage operation. The second stage of the operation is mainly to prepare the bracket needed by the ear (that is, something similar to normal ear cartilage). At present, most stents are carved from their own costal cartilage. After the stent is completed, it is buried under the expanded skin, that is, the ear reconstruction operation is completed.