Outline to improve the appearance and functional recovery of tissue defects. The transplantation of abnormal tissues or artificial materials (such as silicon) that need to be repaired in World War I has continuously promoted the development of surgery in this professional branch, and some remarkable repairs have become possible. Faiely's severe burns and extensive excision of skin cancer are suitable for skin transplantation and must be covered by SCARA; Another breast reconstruction. In addition to correcting defects, plastic surfing usually needs to repair important tissues whose movement and function are destroyed. It is also used in pure cosmetics, such as improving the shape of the nose, bringing the protruding ears close to the head, or lifting the skin to eliminate wrinkles. Modern plastic surgeons often use CAT to scan images generated by produca computer, and use TI to plan or simulate complex reconstruction operations.