In order to forecast or recover the spatial distribution of the surface movement and deformation in mine areas,the author put forward the concept of DSM(Digital Subsidence Model).The difference and relation between DTM(Digital Terrain Model)and DEM(digital elevation model)is presented in the paper.The construction method of DSM is discussed in detail.The idea of DEM inversion is then advanced,and the principle and implementation is also discussed.The case of DSM calculating and subsidence basin expressing is given.The DEM of the south districts in Changcun coal mine in 2000 year and 1997 year is rebuilt according to 2002 year by the space-time simulation and inversion method.The above-generated DEM and corresponding eco-environment data layers can be used into the overlay operation of GIS space,this provides a numerical approach for the analysis of mining-induced trend of eco-environment in the mine area.