2023年12月18日，甘肃省积石山县发生了M_S6.2级地震，是该区域自有地震观测记录以来最大的一次地震。为了研究合成孔径雷达干涉测量（interferometry synthetic aperture radar, InSAR）技术在地震前后对积石山县及周围区域地表形变的实际应用情况，通过利用13景涵盖地震发生时间和覆盖研究区的C波段Sentinel-1A SAR影像数据，运用D-InSAR与SBAS-InSAR技术进行处理，获取了地震前后沿雷达视线向的地表形变信息，并对震前和震后的形变速率结果进行了对比分析。研究结果表明，两种技术的监测结果均以柳沟乡（震中）为中心呈现出隆起现象，并以椭圆状向外逐渐扩展，后又演化为不规则沉降，且地震前后的最大视线向形变量分别为41 mm和16 mm，整个区域震后整体形变情况较为稳定，与相关资料相符合。利用D-InSAR和SBAS-InSAR技术能够监测地震前后长时间的地表形变过程和异常情况，为快速获取同震地质灾害的分布范围，指导震后应急抢险和灾后恢复重建提供有效支撑。

On December 18, 2023, a M_S6.2 earthquake occurred in Jishishan County, Gansu Province, marking the largest earthquake recorded in the area since seismic observations began. To investigate the practical application of interferometry synthetic aperture radar(InSAR) technology in monitoring surface deformation in Jishishan County and its surrounding areas before and after the earthquake, 13 C-band Sentinel-1A SAR images covering the earthquake event and study area were utilized. D-InSAR and SBAS-InSAR techniques were employed to process the data, obtaining surface deformation information along the radar line of sight before and after the earthquake, and a comparative analysis of the deformation rates before and after the event was conducted. The results show that the monitoring results of the two techniques show a bulge phenomenon centered in Liugou Township (the epicenter), which gradually expands outward in an elliptical shape, and then evolves into irregular subsidence. The maximum line-in-line shape variables before and after the earthquake are 41 mm and 16 mm, respectively. The overall deformation of the whole region after the earthquake is relatively stable, which is consistent with the relevant data. The D-InSAR and SBAS-InSAR technologies can be used to monitor the long-term surface deformation process and abnormal conditions before and after earthquakes, and provide effective support for quickly obtaining the distribution range of coseismic geological disasters and guiding post-earthquake emergency rescue and post-disaster recovery and reconstruction.