This group of 4 cases were replanted, blood bubbles appeared 24 to 48 hours after operation, 1 case was removed from the skin, local tissue necrosis formed wound, and the wound healed after changing medicine, and 3 cases were kept intact after repeated removal of the blisters, 2 to 3 weeks after the operation, the scab at the blood bubble was gradually removed, and the replantation finger body survived well.