Abstract: The satellite-borne GPS data are used to determine precise orbit of Jason-3 satellite with the reduced-dynamic method and the kinematic method. The orbital accuracy is assessed by the carrier phase residual analysis, overlapping orbit comparison, comparison with reference orbit and satellite laser ranging (SLR) checks. The result show that the variation range of phase residuals for reduced-dynamic orbit is 0.7 cmto 0.8 cm, the variation range of phase residuals for kinematic orbit is 0.50 cm to 0.55 cm. The radial root mean square (RMS) error of the reduced-dynamic overlapping orbits is 0.32 cm, and the same error of the kinematic overlapping orbits is 1.12 cm. Compared with the reference orbits released by international DORIS service(IDS), the radial RMS of reduced-dynamic orbits is about 1.47 cm, and the radial RMS of kinematic orbits is about 4.36 cm. Results of SLR checks show that the reduced-dynamic orbital accuracy is better than 2.1 cm, and the kinematic orbital accuracy is better than 3.3 cm. The experimental results proved that the accuracy of both reduced-dynamic and kinematic orbits of Jason-3 altimetry satellite were at centimeter level, which could meet the accuracy requirements of satellite orbit.