Abstract: This paper is a part of the "Opening Speech" of the Second National Sumposium on Sedimentary Facies of Clastic Rocks held in Daqing City in sept. 1985. It introduces and studies the recent developing trends of sedimento-logy at home and abroad.Moreover, it proposes a new way for the national researches on sedimentology in the future. In these years, the sedimentology emphasizes the integrated analyses on the indicators of multiple facies and opens up a new frontier for the development of production. Meanwhile, it attaches a great importance to modern sedimentation, event deposition and modelling experiments of flume, seeking for a new depositional mechanism and its model. The oil/gas and saline deposits in China are closely related to the depositional environment of non-marine, lacustrine facies. Therefore, it is a great significance for the national sedimentologist to establish and develop the lacustrine sedimento-logy.