The caving of thick and strong roof stratum causes tremendous rock pressurein mine. The results of the analysis on dynamic natures of actual measurements of somefields, of which the roof pressure can be caused by thick and strong stratum in long wallthick coal caving face, could present the relation between the collapse and movement ofthick and strong roof strata and surrounding rock pressure. In order to control the roofpressure effectively, the thick and strong roof strata, can be fractured and softened previ-ously by hydraulic fracturing and low-high pressure water infusion, fracturing and softeningmethod. The results of study can provide basis for strata control and safe management inlong wall thick coal caving face.