Abstract: Abstract: Combined with the geomorphology、daily mining distance and observation of ground crack of 8101 working face in 1# Selian mine, the paper deduces the distribution law of cracks both in gully and plain area. There are two existence forms of cracks: one is temporary along working face; another is permanent along working face roadways. The ground cracks in plain are much wider and deeper than those in gully area. The surface movement advance crack angle is calculated based on the cracks statistical parameters. Measuring crack development in different landforms, the paper reveals “crack generation-crack extension-sidestepped subsidence-crack closure” dynamic evolution rule. Aimed at geomorphic features in this mining area, the paper also proposes many control measures such as strengthening the observation of cracks evolution and cracks landfill compaction.