Che-Mo palaeohigh is a marginal uplift formed when Juggar basin was still a small intracontinental foreland depression in evolution during the Middle-Late Jurassic.Its formation and evolution can be divided into three main stages: growth(J

2x

-J

3

)

burial(K-E)

and disappearance(Nt-Q).The spatio-temporal configuration of the uplifts and hydrocarbon kitchens formed in different structural stages controlled the formation and distribution of hydrocarbon accumulations.And among the uplifts

Che-Mo palaeohigh played an important role in dominating the Mesozoic hydrocarbon accumulations in central Juggar basin in that the reservoirs came into being during the late J

2x

-J

3

entered critical reservoiring period during the late K and the late E

and started adjustment during the late Nt-Q.It is concluded that the most prospective exploration target in Che-Mo palaeohigh shall be the Yongjin area in the south side of the uplift

while Sawodi and Zhuangdongbei in north part are regarded as the second best targets.