This paper analyzes the principle of GPS precise orbit determination evaluation with satellite laser ranging (SLR) data, and provides a new method to calibrate orbit system error. In order to calibrate the system error and recognize the orbit precision difference in three axes, the new method uses observation data from several stations in one pass arc, and makes orbit error projection at different time. A certain amount of SLR data must be maintained for the method proposed. The simulation results indicate that using orbit error projection for more than 3 stations at different time in one pass arc can calibrate linear system error, and the bigger the angle between station and satellite vectors is, the more accurate the estimation of the system error is.