Abstract: Traditional observation of leveling points suffers problems like enormous workload, vulnerability to the external environment and intuitive observation results. By using the 20 scenes satellite data of Sentinel 1A, the differential synthetic aperture radar interferometry (DInSAR) technology features the characteristics of air remote sensing, high deformation sensitivity, strong penetrating power, almost unaffected by weather constraints, etc. The technology is applied to the monitoring of ground subsidence deformation of Jinan rail transit Line 1, the observed data are compared with traditional precise leveling one. The results show that this method can directly show the surface subsidence along the rail transit Line 1 in Jinan City, the monitoring results are highly consistent with that of the traditional precision leveling monitoring, therefore has referential meaning to the safety management and early warning of rail transit construction and operation.