Abstract: The present paper deals,on the basis of the sequence stratigraphic framework and sedimentary facies distribution,Xinjiang,with the main controlling factors,stacking patterns of parasequence sets and systems tracts,and types of sedimentary systems in the western part of the Taibei depression,Turpan-Hami Basin.The distribution and spatial evolution of the Jurassic-Plaeogne-Neogene sedimentary systems based on the fourth-order sequence boundary are ascertained,and thus have provided a basis for the assessment of the source-reservoir-seal associations,delineation of exploration targets,and evaluation of various oil and gas fields in the study area.