The M_W6.8 earthquake in northeastern Turkey on January 25, 2020, provides critical insights into fault kinematics and regional seismic hazards. Using Sentinel-1A satellite ascending and descending orbit data, the coseismic deformation field of the earthquake was derived to constrain the inversion of geometric characteristics and a detailed slip distribution model of the seismogenic fault. The Coulomb stress changes and regional tectonic setting were further analyzed to evaluate the triggering effects of the 2020 event on the 2023 Turkey double earthquakes and adjacent faults. The result shows that ascending and descending deformation fields exhibited two symmetric near-elliptical distributions separated in the NE direction, indicating that coseismicdeformation occurred on the Puturge fault with opposite deformation signs, suggesting predominantly left-lateral strike-slip faulting. The maximum line of sight deformation values reached~0.35 m and ~0.25 m. The coseismic slip distribution model revealed a strike of ~66°, a dip of ~78°, and a rake angle of ~8°, with a peak slip of ~1.4 m and a maximum depth of ~10 km. Static Coulomb stress on the Puturge fault indicated notable stress loading effects on the 2023 Turkey double earthquakes. Coseismic Coulomb stress results on the Pazarick and ardak faults showed considerable stress loading effects on areas near the two faults due to the 2020 Turkey earthquake. Combined with the high interseismic strain rates along the East Anatolian fault zone, these findings suggest that the 2023 double earthquakes resulted from the interplay between Coulomb stress loading from the 2020 event and heterogeneous kinematic states of the Pazarck and ardak faults.