The carbonate platform margin of Upper Ordovician Lianglitage Formation in Tazhong area in Tarim basin is encircling zone. The platform margin migrated to the Center faulted zone in the late stage deposition of Upper Ordovician Lianglitage Formation. The type of platform margin can be divided into 4 types by the difference of paleo-topography, structural activity and waters energy environment. Different platform margin mode had different phase belt and organic reef-bank complexes. Diagenesis and structural disruption play an important role on carbonate reservoir development.