Abstract: Junggar Basin is devided into 8 first grade structures, 29 second gradc structures and 1 70 odd third grade struc-tures by the auther, according to the patrerns of upheaval-depression combination. The structures are devided into threetypes in accordance with their origins. The paper also approache, the inherit and newborn natures of the basin struc-tures as depicted by the formation and development of several second grade structures.

Key words: Junggar Besin, Struciare devision