Abstract: The underground mining of Hongliulin Coal Mine in Northern Shaanxi Province has caused serious land subsidence problem. In order to further monitor the land subsidence problem in a wide range and prevent the occurrence of ground collapse disaster, the land subsidence monitoring method of Hongliulin Coal Mine is studied. Based on the comprehensive comparative analysis and the settlement characteristics of this mine area, the mining subsidence monitoring method based on SBAS-InSAR technology is selected. Using 21 Sentinel-1A data covering the study area from August 2021 to June 2022 for time series difference processing, the subsidence distribution characteristics and magnitude of the goaf covering Hongliulin Coal Mine are obtained, and the extracted deformation results are analyzed by section line and feature points. The results show that obvious settlement occurs in the 15216 working face of Hongliulin Coal Mine during the monitoring time, and the magnitude and range of settlement gradually increase with the progress of mining, in which the maximum annual average settlement rate reaches −0.30 m/a and the maximum cumulative settlement reaches −0.22 m. By analyzing the correlation between surface subsidence and underground mining progress, it is found that there is a strong correlation between surface subsidence and underground mining progress, which is mainly manifested as a lag period of about two months from the occurrence of ground subsidence after mining. The research results are in line with the mining subsidence law, and can provide technical support for the prevention and control of ground subsidence in mining areas.