The Hancheng power plant landslide is a super-scale landslide, which consists of 7 landslides of various sizes. Among them the volume of No. 6 landslide is up to 10,000,000 rn3. The serious deformations and damages of power plant buildings have been caused by landslide.At present, the landslide is in a condition of slow deformation and creeping. Since the slope angle (30?-20?) and dip (6?-8?) of the rock formations are quite gently. Therefore, its movement should be slow all the time and no rapid slipping will occur. The characteristics of the No. 6 landslide mainly are the focus of the analysis and discussion in this paper.The landslide is transformed from the rock formation slipping of slope induced by coal mining beneath Hengshan slope. In this paper, the relationships between occurrence of the landslide and underground coal mining are analysed and proved in detail, and the problems, which should be paid attention to in harnessing the landslide, are put forward.