中厚煤层在我国部分矿区赋存广泛 ,文中介绍了中厚煤层悬移迈步支架放顶煤技术 ,通过实践与研究 ,得出了一些体会和认识 ,为类似条件煤层的开采提供了借鉴经验 Middle and thick coal seams are widely distributed in some mining areas in our country. In this paper, the technology of caving coal caving with medium-thick coal seam moving stepping support is introduced. Some experiences and understandings are obtained through practice and research, which provides reference for the mining of coal seam with similar conditions