Abstract: This paper presents an experimental investigation of the ERS-1/2 SAR tandem data in 1996 on DEM generation of the Grove mountains core area, compares the DEM with the actual topographic form and analyzes the feasibility of InSAR applied to Antarctic Mapping. In the relatively stable and with good coherence area, the RMS is about 5.4m. It is confirmed that InSAR can be used to produce more products to complement the dangerous field surveying. And for Antarctic investigation, InSAR is also an effective tool in studing ice sheet flow, ice sheet kinematic characteristics, and mass balance by adopting more pairs of radar image data.