A dynamic force is the product of mass and acceleration. This paper describes the status of sinusoidal force measuring standard device and the development of sinusoidal force traceability. It is the development direction of the sinusoidal force measurement to measure the acceleration by laser interferometer and trace directly to the mass, length and time according to the definition of dynamic force. In order to reduce the uncertainty of the sinusoidal force measurement, it is very important to accurately measure the acceleration distribution of the loading mass, the coupling between loading mass and force sensor, and the equivalent mass of force sensor end. Based on the elastic dynamics theory, the three-dimensional structure of the mass is simplified into a one-dimensional structure by using the circular plate elastic dynamic model to study the radial distribution of the acceleration. The dynamic model of the bar structure is further simplified into a point to study the axial distribution of the acceleration, and the accuracy of the measurement results of the sinusoidal force is improved.