In order to solve the problem of the lower loading accuracy of electric linear loading test system （ELLTS） caused by the motion disturbance of linear actuators （problem of surplus force）， an improved disturbance feedforward compensation strategy is proposed based on the analysis of traditional disturbance feedforward compensation. The strategy does not require the velocity feedback signal of the actuator， and only uses the displacement command signal and the force signal as the compensation term， which avoid the installation of a speed sensor. Furthermore， it is easy to use and flexible for applying. The surplus force of the proposed strategy is simulated using the SIMULINK software， and the rationality and feasibility of the proposed strategy are verified by the simulation results. Finally， many comparison experiments are implemented， whose results show that， the surplus force with the algorithm is well restrained within the dynamic loading frequency. In addition， the force output accuracy of ELLTS with the proposed strategy is further improved under typical loading conditions， which satisfies the "double ten index".