Abstract: Statistics of the "order" of the landforms and their elevations have been carried out from 126 coastal terraces sections for the study area.The authors suggest that the marine landforms might take their forms in the mid Holocene time,and.the marine-erosion terraces of W "order",in the geological context of pleistocene.The results from the research of this kind indicate that the Yalu Jiang fault and the Jingzhou fault are the major active faults in the study area.The authors also indicate that there may be a genetic relationship between the coastal terraces in question and marine terrace along the lower reaches of the Liaohe,theirrelative motion being quantitatively determined.