One of the most remarkable paleo-geomorphological units in the Liaodong Bay is Liaodong Shoal, which was shore sedimentation during the low sea level in late Pleistocene or early Holocene and have since been violently reformed. Liaozhong Depression, which might have been a paleo-lake or paleo-lagoon, is located to the north of Liaodong Shoal. In the Liaodong Bay, there are many buried paleo-channels,among which Dalinghe-liaohe paleo-channel is the longest. Those paleo-channels once injected into Liaozhong paleo-lake(or paleo-lagoon ) from different directions In addition, therevare paleo-barriers, paleo-dunes, which were formed during low sea level, and some relicts can still be found on them. They might have been paleo shore sediments. The development of above mentioned paleo-geomorphological units and relicts depends upon many factors, such as hydrodynamical regime, ununiformity of the distribution of the deposits velocity in different regions, and the change of the sea level etc. Although the solid discharges to the Bohai Sea by the Huanghe River are estimated at 1, 200 million tons annually, approximately 70% of the deposits are in shallow area near the river mouth. In addition, submarine erosion is advantageous to the development of those paleo-geomorphological units and relicts. Based on the paleo-geomorphological data two paleo-shorelines might have existed in the Liaodong Bay, one at the water depth of about 30 m and might have been formed 9000-10000 years ago, and one at the depth of about 20-25 m and formed about 7000-8000 years ago. According to the characteristics of its paleo-shoreline and three shell banks of the west coast of the Bohai Bay, the region might have gone 5 times through relatively halting or pulsative changes since late pleistocene or early Hlolocene.