Abstract: Seam sliding zones are commonly found in faulted depression basins in Nor th China and become the important factors influencing the stability of their s urrounding rockmass in underground miningworkings. Taking mining areas in weste rn Shandong as examples, this paper discusses development characteristics of sea m sliding zone and its formation mechanism, analyses its repeated deformation u nder the conditions of excavation and operation, and points out some problems to which should be paid attention during roadway designing and maintaining near th e seam sliding zone.