A new control method of disturbance compensation based on acceleration signals is proposed to enhance the servo function of speed control system of a DC torque motor in a precise photoelectric stabilized-platform and to make the system have better dynamical functions and stronger abilities of disturbance rejection. In this method,a nominal controller is established and a disturbance observer is created using acceleration signals to compensate quickly and precisely the external disturbance and to reduce the effect of the model error. Thus,the dynamical function and disturbance rejection ability of the system are enhanced. The experiment result shows that this control method can improve the dynamic performance of the motor control system,which accelarates motor responds and restrains overshoots.For the step external disturbance,the system speed only shows a pulse fluctuation with a width of 0.1 s,and the amplitude is one half of that of PID controller. Besides,the control system is robust towards the uncertainty of the motor model. These results show that the method has magnificent effects and good applications and is very suitable for engineering.