The influence of different parameters on the offset tracking calculation results was analyzed. Then, the offset tracking method based on texture features was added to the offset tracking tool of SNAP8.0. Two offset tracking methods were combined to process the Sentinel-1 ascending and descending data. Two-dimensional deformation of the open-pit mine were calculated according to the geometry of ascending and descending observation. The results show that there are 6 large gradient deformation areas in waste dump, mining area, and stripping area. Vertical and east-west deformation ranges from -42.41 m to 40.71 m and -50.41 m to 42.80 m, respectively. In stripping area, vertical and east-west deformation reaches the maximum, which is -42.41 m and -50.41 m, respectively. The identified large gradient deformation is mainly located in the areas with frequent mining and dumping operations, Therefore, SAR offset tracking technology can effectively monitor the deformation in operation area of open-pit mine, so as to ensure the safe production and life in mining area.