This work presents a new designed wheel force transducer which can decouple between the motion and force. Since the wheel force transducer is speciallydesigned and installed on the spinning wheel of a vehicle, the rotation and inertial couplings cause errors into the force measurement. With the introduced the motion measurement technique such as a MEMs unit, these errors can be eliminated with the combined algorithms including the rotation decoupling, inertial decoupling, and the initial error calibration, so the precision of force measurement can be improved for the transducer.