Abstract: The relation between oil and gas distribution and deposition of Tertiary in east China is discussed,pointing out that the deposition of Tertiary is mainly controlled by the character,development and structure of basins,as well as by faulting.Proximity to source area,short distance of sediments transportation and turbidity current hydrodynamics of floods are among the salient features,with lagoonal deposits of reefs and clastic limestones formed at places.A brief description is given of Tertiary petroliferous sand bodies already established by exploration,including the following types:underwater alluvial fan,nearsource delta,turbidity channel sand,under-water sheet flow(laminar flow) lake shelf sand,channel sand,reef limelightone-clastic limestone and other small sand bars along the shore.In the last part of the paper,the guidelines for searching oil in Tertiary rocks in the basins are discussed from the point of view of sedimentation.