Abstract: A method has been developed for the release and determination of biomarker compounds in the covalently bound biomarkers of higher evolution sedimentary organic matters by catalytic hydropyrolysis HYPY/GCMS. The analytical results of steroids m/z 217 and hopanoids m/z 191 agree with the results obtained using DCM (CH2Cl2) Soxhlet extraction, and the hydropyrolysis yield is much higher than that of DCM extraction. It is considered that catalytic hydropyrolysis is a unique technique for biomarkers releasing from kerogen in high yield without affecting their biologicallyinherited stereochemistries, fewer carbon skeletal rearrangement, and mild reaction condition. The experimental results show that these primary components in the molecular skeleton of the sedimentary organic matter (SOM) can be released rationally by catalytic hydropyrolysis (HYPY), and applied in oil/oil correlation, oil/source correlation, the sedimentary environments of organic matter in oil pools, the secondary reconstruction of oil pools and other researches.