Abstract: Based on SBAS-InSAR technology, the surface deformation of Tongchuan Coal Mine was monitored through 155 images of Sentinel-1A,and the subsidence rate, time series subsidence and cumulative subsidence were extracted.At the same time, according to the subsidence area of specific coal mines in the study area, the time series subsidence law of coal mines was analyzed.InSAR interpretation results show that the distribution of surface subsidence in the east and west mining areas in the study area is unbalanced, which shows that the overall subsidence in the west is higher than that in the east.The research shows that SBAS-InSAR technology can be effectively applied to the identification and monitoring of mining subsidence in mining areas, which provides a scientific basis for analyzing the characteristics and specific development degree of subsidence problems in mining areas and for the follow-up prevention of hidden dangers of surface subsidence.