The landuse change and landscape heterogeneity in the Dongda coal mine are studied in comparison with no coal-mining subsidence.The changes of patch number and its avreage in various landuses, as well as fragmentation index, diversity index, evenness index,dominance index, and so on are analyzed.Results in- dicate that the development tencJency of ecological environment is unreasonable in the Dongda coal-mining subsidence area because coal-mining subsidence causes distortion of land surface, such as cracks, subsidence hole, and landslide.Consequently, it breaks the cultivated land into small pieces, brings an increase in patch number and a decrease in patch average area, and severely destroys vegetation in the region.