Re-implantation refers to the process whereby a finger or toe is injured for various reasons, basically in an emergency, and the blood flow of the injured finger or toe is affected or temporarily interrupted, and the medical staff uses microscopic techniques through a specialized microscope to re-anastomose the blood vessels and restore the blood flow. Reconstruction means that the severed finger or toe is so badly damaged that there is no way to replant it, or even if it is anastomosed with a blood vessel, it is estimated that it will not be able to survive, and in this case, it is necessary to reconstruct it. Another situation is that the original injury is not replanted, the finger body is missing, and then want to restore the appearance or function of the finger body, the medical staff from outside the hand to find ways to reconstruct a similar finger. Originally, due to the level of microscopic technology and microscopic instruments, most of the patients were reconstructed on an elective basis, and many of them were reconstructed by simple iliac bone grafting + abdominal flap repair. Nowadays, with the improvement of microscopic techniques, many patients are reconstructed on an emergency basis at the time of injury. The level of reconstruction is also getting higher and higher, and the concept of holomorphic reconstruction has been put forward, which has evolved from simple bipedal toe grafting to composite grafting of multiple tissues and multiple flaps for reconstruction, and the reconstructed fingers are getting more and more beautiful and functional.