地面沉降的发生发展与人类社会经济活动息息相关，随着沿海大开发的持续推进，地面沉降中心由内陆向港口、海堤及围填海区域发生转移，沉降影响因素也由单一向混合型转变，而InSAR监测的区域全覆盖特性正好可以匹配如今不断变化的监测需求。文章以连云港地区为例，在简述基于InSAR的地面沉降监测成果的基础上，进行多源数据对比与验证，从而对InSAR监测成果进行验证与评价，最终结果一致性好、可信度高，满足目前地面沉降监测精度要求，为城市地面沉降监测技术体系的优化与完善提供数据支撑。

The occurrence and development of land subsidence are closely related to human social and economic activities. With the continuous development of coastal areas, land subsidence centers have shifted from inland to port, seawall and reclamation areas, and the influencing factors have also changed from single to mixed types. The regional full coverage characteristics of InSAR monitoring can meet the changing monitoring requirements. Taking Lianyungang Area as an example, , this paper conducts multi-source data comparison and verification of land subsidence, to verify and evaluate the InSAR monitoring results. The results show good consistency and high credibility, and meet the current requirements for land subsidence monitoring accuracy. The study provides data support for the optimization and improvement of urban land subsidence monitoring technology system.