To establish the best configuration of fixation for distal humerus fracture. Method : Afterdistal humerus osteotomy, different fixations were applied for different specimens, include crosscancellous screws, single 'Y' type plate, 'J' type plate, 1/3 tubular plate and reconstruction plate.'Three-point bending' test was applied to measure the biomechanical strength of anterior-posteriorbending and medial-lateral bending. Result: Two plate construct placing at 90"(the medial one atulna side,and the other at posterior- lateral) is the most rigidity and stability(ANOVA, P<0.01).Conclusion: Because two plate system to fix the distal humerus fracture reconstructed the humerusdistal triangle structure which is consisted of medial, lateral columns and burneral trochlea, it isthe most rigid fixation.