Based on mining pressure monitoring data on 102 working face in Ordos Area，through theoretical research and practical analysis, the law of dynamic pressure appearance in this mine was explored. Through dynamically analyzing deformation and failure process of surrounding rock and theoretically analyzing rule of broken and evolution of overlying rock and stress distribution based on three-zone structure loading theory, the height of three load belts and the advanced influence range of different mining stages in 102 working face were analyzed，which guided the development of advanced support measures. The roof movement in low position of the working face determined the intensity of its strata behaviors. The relation between mining speed of working face and energy release of overlying rock’s fracture was obtained, as the mining speed gets faster, the energy and frequency of micro-seismic events appeared liner growth.