Abstract: The hydrocarbon of the Lunan Salient on the hinterland of the Junggar Basin has the geochemical characteristics of high maturity,low sulfur and high nitrogen contents,heavier carbon isotope,etc.By synthesizing various data,it is considered that the formation of this kind of hydrocarbon should be related to the deep hydrocarbon resources with volcanic material.Tte fingerprinting characteristics of biomarkers show that the Carboniferous mudstone extracts have good affinity to crude oil.Based on such cognition,some suggestions for the hydrocarbon exploration of the area are put forward by the authors.