Abstract: Taking the shale members of Lower Es3 and Upper Es4 of the Paleogene in Jiyang depression as research subjects and starting from the hydrocarbon generation condition and oil?bearing property, the geochemical characteristics of the shale oils are evaluated. The results show that the shale members have favorable conditions for forming shale oil. This paper establishes the grading evaluation criteria of shale oil in terms of organic carbon content, chloroform bitumen“A”content and dissolved hydrocarbon content“S1”. Combined with the evolution of profiles, it proposes the shale members’oil enrichment thresholds, and suggests that the shale members of Lower Es3 and Upper Es4 in Dongying sag and Lower Es3in Zhanhua sag and Chezhen sag are favorable target zones for shale oil exploration in Jiyang depression