 The accuracy of DNAs interferometric deformation results depends on the phase unwrapping method used, so it is important to choose the appropriate method for different mining areas based on their coherence levels. A comparative study of three phase unwrapping methods, region-growing, minimum cost flow, and De Laune MCF, was conducted using SArescape software on two sets of Sentinel-1A data in Shien Gang mining areas. The results showed that the De Laune MCF method is the best for monitoring low-coherence mining areas under most conditions, while the minimum cost flow method is better for high-coherence areas where smoother and more continuous phase unwrapping results can be obtained by selecting a mining area with better coherence. This article was authored by Bae Jong, Jerry Lee, and Hongrui Ren.