Objective:To evaluates mandible reconstruction by free vascularized fibular flap with special emphasis on the immediate complications.Methods:The clinical data of 63 patients were reviewed,35 male and 28 female(age range 16 to 73 years).Aesthetic and functional outcomes were evaluated by follow-up and/or telephone conversation.Results:Among the 63 fibular flaps,29 were osteocutaneous flaps with one or two skin islands.All the flaps were surviving well and the success rate was 100%.Long term donor site disability was not recorded for any patient.Thirty-one patients responded for aesthetic and functional evaluation,20 cases(64.5%)reported their facial appearance as excellent or good,11(35.48%)felt fair;14 cases(45%)could eat unrestricted diet,17(55%)could eat soft diet;21 cases were(67.67%)speech normal,10(22.33%)speech intelligible.Conclusion:Free fibular flap reflects good functional and esthetic results with a high degree of consistency,and acceptable level of complications,and we strongly believe the vascularized fibular flap is the first choice for mandibular reconstruction. Objective: To evaluate mandible reconstruction by free vascularized fibular flaps with special emphasis on the immediate complications. Methods: The clinical data of 63 patients were reviewed, 35 male and 28 female (age range 16 to 73 years). by follow-up and / or telephone conversation. Results: Among the 63 fibular flaps, 29 were osteocutaneous flaps with one or two skin islands. All the flaps were surviving well and the success rate was 100%. Long term donor site disability was not recorded for any patient.Thirty-one patients responded for aesthetic and functional evaluation, 20 cases (64.5%) reported their facial appearance as excellent or good, 11 (35.48%) felt fair; 14 cases (45%) could eat unrestricted diet, Of the 21 cases were (67.67%) speech normal, 10 (22.33%) speech intelligible. Conlusion: Free fibular flap reflects good functional and esthetic results with a high degree of consistency, and acceptable level of complications, and we str ongly believe the vascularized fibular flap is the first choice for mandibular reconstruction.