Abstract: On the basis of the satellite perturbation theory and vector operation principle,the acceleration characteristics and its expression are presented.As to CHAMP's satellite orbit parameters,the magnitude orders of every perturbation item are computed.The results show that the acceleration correction magnitudes produced by the perturbations of the right ascension of the ascending node and the argument of perigee and by the indirect perturbations of the satellite motion and the coordination rotation are below 10^-11 m·s^-2 which can be neglected.