Objective To study the clinic effect of repairing the femoral head with the transposition of great trochanter bone flap pedicled with branch of transverse lateral circumflex femoral vascular Methods To opt the stage Ⅲ～Ⅳ cases of adult avascular necrosis of the femoral head, after cleared the pathological changes position, the transposition of greater trochanter bone flap pedicled with branch of transverse lateral circumflex femoral vascular were repaired the femoral head Results Twelve cases were subjected to a serial follow up (average 2 9 years). The function of hip joint were recover and the clinic good was seen. The excellent rate was 75 5% Conclusion The lack bone after the operation of avascular necrosis of the femoral head, appling with the transposition of greater trochanter bone flap pedicled with branch of transverse lateral circumflex femoral vascular to repair the femoral head, renew the function of hip joint Its an effective means to treat avascular necrosis of femoral head