Abstract: The fault systems and the fault evolutions were analyzed in the Dongpu Sag. The transfer ways of displacement and their corresponding transfer structures among faults within each fault system and among the fault systems were discussed. Four kinds of transfer ways of displacements were determined, including transformation, relaying, growth and decline, and simple decline. The way of transformation resulted in the transfer faults and wedge-shaped fault steps. The way of relaying resulted in the strike slopes and horsts. The way of growth and decline resulted in the central oblique anticlines. The way of simple decline formed decline slopes and fault noses. The transfer structures formed in different time were connected to form transfer structure belts and made the sag in segmentation. The superposition, reconstruction and migration of the transfer structures were closely related to sedimentation and favorable to generation of subtle reservoirs.