The carbonate platform developed on the Yangtze block during the Hercynian-Indosinian stage. Platform margin depositional system developed in the southern carbonate platform including four sedimentary types: the beach of carbonate platform margin, the reef platform of carbonate platform margin, platform margin slope and the sea between beach (reef). The study proved that horizontal migration of platform margin was mainly controlled by syndepositional faults, the vertical sequence evolution of platform margin was mainly controlled by sea-level change, the type of margin reef-bank was controlled by different types of carbonate secret organisms. oft-com:office:office" />