Abstract: Based on the theories of plate tectonic cycle and coincidence and enrichment of multiple sets of oil and gas source in biogenesis and abiogenesis, the classification of China, petrol iferous basins and economic evaluation of oil and gas resou rces have been made. Type is Bohai Bay type petrol iferous basin which has characteristics of long-time coincidence and enrichment of multiple sets of oil and gas source in biogenesis and a biogenesis, belonging to the best in economic eval uation of oil and gas resources; Type I is Junggar type petroliferous basin whichis characterized by coincidence and enrichment of them in the early stage, and only coincidence of conti nental biogenesis oil and gas source in the later stage, being the lietter in economic evaluation; Type Iis Qinshui type petroliferous basin with features of coincidence and enrichment of them in the early stage, and of long-time uplifting structural environment in the later stage, being the poor in economic evaluation of oil and gas resou rces. Among three ma jor basins in Xinjiang, the favourable oil and gas prospecting areas are as follows; middle parteast part, west part and south-west margin of Tarim basin, northwest margin, nort heast margin, Lu liang area and central rift expansion area of Junggar basin, Bogda pied mont area of north and Juelotag pied-mont area of south of Turpan-Hami basin.

Key words: Plate tectonic, Structural superposition, Petroliferous basin, Classification, Evaluation, Bohai Bay basin, Junggar basin, Qinshui basin