Abstract: In response to the ongoing geological settlement issue at a substation of Yunnan Power Grid, this study systematically reveals the settlement characteristics and formation mechanisms by integrating multi temporal remote sensing data, detailed geological surveys, and meteorological hydrological analysis. The research indicates that the settlement primarily concentrates in three zones: the southeast side with subsidence of 10 to 15 cm, the northwest side with maximum subsidence of 10 cm, and the off site access road with subsidence of 5 to 10 cm. The deformation direction aligns consistently with the original topographic slope. InSAR deformation monitoring identifies four significant deformation anomaly zones in the vicinity, with a maximum deformation rate of –81.9 mm/a. The cumulative settlement at the substation's northwest corner reaches 88 mm, while noticeable deformations also occur at the southeast corner and access roads, consistent with field observations. The primary cause of settlement is attributed to the instability of high fill embankments on original slopes under the coupled effects of persistent rainfall and soil creep deformation. To address the continuous deformation of substations, a comprehensive management system is established, incorporating "concrete slab and anchor cable" reinforcement, real-time satellite monitoring, and intensified inspections during rainy periods, providing a reference for addressing similar engineering geological hazards.