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Objective To investigate the influence of different neck shaft angle,torsion angle,and elastic modulus in the force characteristics of the cancellous bone of the femoral neck. Methods A sensor was implanted in the cancellous bone of the femoral neck. The bone under two loading rate and four kinds of load was tested using Instron testing machine. Results The larger the neck shaft angle was,the smaller the force of the cancellous bone of femoral neck bore. The larger the torsion angle was,the smaller the force it bore. The modulus of femur neck was related to the force that the cancellous bone of femoral neck bore. Rapid impact made the cancellous bone of the femoral neck stood larger force. When the force was beyond the elastic deformation of the cancellous bone,compressive load under slowspeed made cancellous bone stood greater stress. Conclusion Normal neck shaft angle and torsion angle are beneficial to the bearing capacity of the cancellous bone. When neck shaft angle gets larger,the cancellous bone stands less force,which is not beneficial to the stability of the cancellous bone of femoral neck. Especially in osteoporosis,the cancellous bone becomes sparse,which is vulnerable to the load and is prone to fracture. Larger torsion angle and less force standing by the cancellous bone can also cause the thinning of the cancellous bone and higher risk of fracture. [ABSTRACT FROM AUTHOR]