Re-implantation of severed finger is divided into two categories: complete disarticulation and incomplete disarticulation reimplantation. The so-called complete disarticulation is well understood, incomplete disarticulation refers to the injury of the distal end of the finger although a small part of the finger is connected to the proximal end, but the operation must be anastomosed with blood vessels in order to ensure the survival of the finger, which should be differentiated from the open phalangeal fracture and tendon and nerve injuries. Simply put, the blood vessels must be anastomosed in order to be considered reimplantation. Reimplantation means that in addition to routine fracture tendon repair, the medical staff must also use surgical magnification or optical microscope to perform fine vascular anastomosis to ensure the survival of the distal end of the injured finger.