Continental margins are the principal locus of sediment accumulation on the Earth. The resulting strata have documented important information on global sea-level change, climate change, lithosphere deformation, ocean currents, geochemical cycles, organic productivity and sediment replenishment. However, although the continental margins sediment dispersal systems have been studied for several decades, still are there many problems remained to be less well understood, especially, quantitative explanation to the dispersal systems and the strata formed from them has not been achieved. So a initiative to study the source-to-sink: margin sedimentation systems and relating geological processes is being conceived by geological sciences communities around the world, to better predict the behavior of the margin sediment dispersal systems. The research objects, contents and major intended scientific problems around source-to-sink margin sedimentation were outlined is this paper, major contributions of DSDP and ODP and recent development in this domain have also been introduced.