Functional training is put a very high position in the treatment of fractures by Western Medicine and Traditional Chinese Medicine. The influences of functional training during fracture healing are very important. Functional training will begin after reduction and fixation and it represents the principle of the combination of functional training and fixation in the fracture treatment by TCM. Functional training makes kinds of favourable stress, which can accelerate the healing of fracture, but the incorrect functional training makes shear strength or torsion and so on, which may make interfere fracture healing. So, the biomechanical studies on functional training of the fracture are becoming a focus of fracture treatment.