The groin flap was designed to improve the conventional repair of the donor site of the anterolateral thigh flap. The modification method was applied successfully to cover the defects of donor sites of anterolateral thigh flaps in five patients. An ideal color match and a stable and completed composition for the donor sites were obtained. Little morbidity of the donor sites occurred. Cosmetic and functional rehabilitations of the donor sites were achieved. These results suggest the potential and novel method to improve the repair of the donor sites of anterolateral thigh flap.