In serious scar or chronic ulcer caused by burn or trauma, skin graft can not be survival and the local flap can not be found in these cases. Also skin grafts can not improve function of these places. Free flap transplantation should be used in these cases. Femoris forelateralis flap has some advantages. It is hidden from view and there is no effect after it is taken. It has constant blood vessels which are easy anastomosed. So the flap is more widely used. Forty-six cases were given femoris forelateralis flaps (hand burn scar deformity 15 cases, foot scar 10, forearm or leg scar or tissue defect 8, leg or foot chronic ulcer 8, face or neck tissue defect or serious scar 8). Forty-five cases (97.8%), were survival. Only one case had necrosis. The key of survival is choice of the operative indication, excellent anastomosis technique, good fixation postoperatively, care observation, and timely handling. In vasculitis or phlebitis ulcer, the vessel condition is bad. In old people, especial with heart or vessel diseases, condition is also bad. We shoule be careful in these situations.