Abstract: The palaeohigh in Junggar basin underwent multistage evolution from Neopaleozoic to Cenozoic, and four basic types 8uch as successional, discontinuous, tited and thrust ones were developed. This paper presents the tectonic and depositional evolutions and the hydrocarbon accumulations in this basin, and suggests the petroleum prospecting areas and targests in is Luliang uplift, Mosuowan swell and Che-Mo uplift. It is concluded that these places are all favorable for hydrocarhon accumulation such as swell area closely adjacent to the sag in Luliang uplift or inherited swell zone controlled by fault, Xiazijie formation of Upper Permian, top Xishanyao formation of Lower Jurssic and bottom Jiamuhe formation of Lower Permian as well as flank Che -Mo uplif.

Key words: Junggar basin, palaeohigh, type, prospecting larget