Theoretical models of hydrodynamic field in a sedimentary basin could be concluded as two types: symmetrical and asymmetrical ones. Four types of local groundwater hydrodynamic units in the basin could be recognized: ①centrifugal flow caused by mudstone compaction at depression areas; ②gravity-induced centripetal flow recharged by meteoric water along basin margins generally; ③discharge area by cross-formational flow, or cross-formational flow and evaporation, and ④stagnation flow area. The evolution of hydrodynamic field had the property of a hydrogeological cycle. It could be divided into centrifugal flow stage during which the basin subsided and sedimentation occurred, and centripetal flow stage during which the basin uplifted and eroded. Accompanying the origin and evolution of sedimentary basin, hydrodynamic field underwent a process of origin, development and perished at last. Obviously, the hydrodynamic field in the Dongying Depression was symmetrical, with the characteristics of gravity-induced centripetal flow recharged by meteoric water along the edges of the depression, centrifugal flow formed by compaction in the central depression area, and cross-formational flow and concentration by evaporation in the southern slope and northern fault ramp along the basin margins and the central fracture zone in the interior depression area. The intensity of hydrodynamics had the property of vertical zoning. The intensity weakened gradually with the increasing depth.