Using interpretation results of high precision three dimensional seismic data, the lateral transitional zone associated with faults of different occurrence are analyzed, which are from different tectonic movement since the Mesozoic in southern Jiyang Depression, Bohai Bay Basin. Research shows that the lateral transitional zone in NNE direction is composed of lateral compressive fold and lateral fault ramp in Indosinian movement. In Yanshanian movement, the lateral transitional zone is in NEE direction, which is assembled by the transfer fault and lateral uplift. The lateral transitional zone is NW, which is made up of the relay ramps and transfer zone in Himalayan movement. The different tectonic parts of lateral transitional zone possess unequal changes in evolution of superposition and migration respectively, creating different tectonic settings, which causes different migration and accumulation of hydrocarbon. Superimposed transitional zone can form composite zones of hydrocarbon accumulations. Migrated transitional zone can result in “sag wide oil bearing” hydrocarbon distribution.