Abstract: The integration of the data on depositional background, compositions, structures and textures, and lithological sequences has revealed that the Jurassic sediments on East Fukang slope of the Junggar Basin, Xinjiang are cyclically well defined, and may be divided in to six depositional sequences and two structural sequences. These sediments have low compositional maturity and moderate textural maturity, and display the depositonal sequences of traction flow deposits and deltaic deposits viewed from grain-size probability curves and sedimentary structures. The sources of detritus lay to the north and south, as well as other orientations. The depositional systems consist of braided stream, braided delta, meandering stream, normal delta, fluxoturbidite fan and lake systems.