The paper introduces the design ideas of multi-component force and torque calibration device which could actualize continuous load of each component separately or six-component synchronously. Aiming at the characteristics of wide range, large space and high accuracy of the device, the technical difficulties involved in the device development has been explained. Some technical problems about six-component loading together , such as the design principle of six-component load，the mechanical structure design of device mainframe and the design of hydraulic pressure dynamical system have also been analyzed. Finally, the technical capability and test validation of the calibration device has been described.