Abstract: This paper takes the GRACE satellite reduced kinetic orbit published by JPL and the geometric orbit published by ITSG as observations, respectively. The influence of Calibration of onboard accelerometers on track smoothing results is studied by dynamic method. The arc length is fixed to 24 hours. The results show that the accuracy of the integral orbit can be improved by using the-first-order bias estimation strategy with 15-minute and the diagonal filling strategy of the scale model. The RMS values in X direction, Y direction and Z direction are 1.89 cm、1.76 cm and 1.56 cm, respectively.