Abstract: In recent years,the research on control action of sedimentary system by tectonism is a hotspot in international investigations and the production and practice of oil fields now.A great deal of research shows that distribution and up-growth of sedimentary system in fracture extend basins is not only related to change of lake level and climate,but mainly controlled by tectonism.Studying on control action of sedimentary system by tectonism brings up a new idea for reservoir prediction.