Objective To stady the clinical effects of repairing soft tissue defects on body surface by grafting free anterolateral thigh flaps. Methods 11 patients were treated for soft tissue defects on body surface by grafting free anterolateral thigh flaps from October,1986 to January,2002. Results all flaps in the 11 patients survived.Follow-up survey in the (6～18) months after the operation showed satisfactory results. Conclusions Free anterolateral thigh flap is well supplied with blood,and it is in a concealed area of the body,where flaps of large size can be cut off.It is the ideal flap to repair large areas of soft tissue defects on body surface.