The mining area formed by underground mining of coal mines has caused serious damage to surface works and the surrounding environment, resulting in ecological fragility and shrinkage of pasture areas around the Shajihai mine. Long-term abandoned mines are difficult to be effectively managed because the underground mining situation and its extent are not clear. Monitoring the deformation characteristics of the mining area through a long time and large scale is important for geological disaster prevention and management. Based on 73 Sentinel-1A images covering the Shajihai mine area from March 19, 2017 to December 22, 2019, small baseline subset synthetic aperture radar (SBAS-InSAR) was used to obtain temporal residual deformation. The average deformation rate of the study area is monitored to be - 148. 44 ~ 38. 05 mm/ a, and the maximum cumulative deformation is - 1,418. 42 mm. The deformation characteristics of the working face were obtained separately, and the deformation of the mining area in the mining mine was funnel-shaped, while the settlement of the abandoned mining area was multi-point dispersed and uneven. The reliability of SBAS-InSAR results was verified after a detailed field survey of the Shajihai mine area. Finally, the process of the coal mining void area evolving in a funnel shape around the subsidence center was analyzed in combination with the field verification results. The research results can provide reference for the management of old mining areas and guidance for the prediction of deformation of mining areas. [ABSTRACT FROM AUTHOR]