Abstract: Based on the whole structural evolution in Junggar basin, considering the differences in the structural evolution and petroliferous na-ture in each area, this paper analyzes the all classification conceptions for the structural units and relevant comprehensive geologic reports and seismic profiles, and proposes a set of new and regular concept suitable for classification of the basin and regional structural units. The concept includes 6 Class-I units and 44 Class-II units. In comparison with previous concepts, the piedmont thrust belt in north Tianshan mountain is classified as unit of Class-I ; W ucaiwan sag classified into the uplift in eastern Junggar basin; Zhongguai swell into the uplift in western the basin; Iuliang uplft, Changji sag and Zhangbei fault-fold zone are sub-classified in this article.

Key words: Junggar basin, structural evolution, structural unit, program, concept, principle