The occurrence of rockburst satisfies “static-dynamic load superposition principle”,and overlying strata damage and movement is one of the main reasons to generate dynamic load.Microseismic monitoring confirms spatialstructure of overlying strata existed and evolved dynamically with the exploitation scope changes in coal mines.Based on the analysis of relationship between “square effect” of overlying strata and strong mining tremors as well as “Key strata” theory,the integrated spatial structure of overlying strata is put forward in this paper that composed by “O-X”structure in the plane section and “F” structure of the vertical section.The formation and instability of the “O-X” and “F” structure ongoing continually is called dynamic evolution cycle of the overlying strata in coal mine.Three basic categories of “O-X”,“F” and “T” structure are defined,classifications and strata behaviors of each spatial structure are determined based on the state of key strata.According to energy theory,Mechanism of rockburst induced by spatial structure instability of overlying strata is discussed,the bending elastic energy is calculated as the “square” of overly strata,and the effect of “F” and “T” is analyzed.The strata behaviors and mining tremors of “F” and “T” structureworkface are more violently than that of “O-X” structure.The research expands the scope of traditional ground pressure theory and provides a guide for the prevention of rockburst and mining tremors induced by structure instability ofoverlying strata.