Both Galileo and Sentinel-6A satellites are equipped with GNSS and SLR observation capabilities, which shows the potential to improve the orbits by combining both GNSS and SLR data. In this study, Galileo and Sentinel-6A satellites reduced dynamic orbits were determined by integrating GNSS and SLR data at the observation level, where two weighting strategies and the impact of SLR data on the final orbits were assessed. Data over 300 days were adopted in the experiments. It is found that the 3D RMS between dynamic and kinematic orbits for Sentinel-6A during the satellite maneuvers on DOY 173 is reduced by 10\%, which indicate the SLR data could bring a significant improvement to the dynamic Sentinel-6A orbits when satellite maneuvers. Moreover, in comparison to GNSS-only solutions, the adoption of the dynamic weighting strategy during orbital maneuvers has demonstrated a decrease in SLR residuals STD values by 9\% to 46\%. The results also show that introducing the SLR data can lead to a reduction of approximately 5\% in the averaged overlapping RMS for Galileo satellites. Nonetheless, the integration of SLR observations could enhance the accuracy and reliability of both Galileo and Sentinel-6A orbits, especially during orbital maneuvers.