Precambrian Ruyang and Luoyu Groups consist mainly of shelf and coastal deposits, Storm-influenced horizons or tempesttes are well developed in these groups.in particular, in Beidajian, Cuizhuang and Sanjiaotang Formations. This study deals with some typical tempesttes and storm-related sedimentary structures, includinghummocky cross-stratified sandstones, swaley cross-stratified sandstones, turbiditelike storm sandstones, thin intraformational pebbly conglomerates or pebbly sandstones, oolitic ironstones, glauconitic horizons (condensed layers) and hardgrounds.Different tempesttes have their distinct history of development. Facies of tempesttes and their associations can be used to reconstruct, in considerable details, depogitional zones within ancient coastal and shelf settings. The Cuizhuang and Sanjiaotang Formations form a typical sedimentary sequence which recorded evolutionaryprocesses from outer shelf to shoreline. The detailed environmental interpretation.of some intervals of the Ruyang and Luoyu Group are mainly based upon obserytions of tempesttes in addition to the consideration of other relevant factes.