Under the influence of the tectonic uplift and tectonic reverse, the Cretaceous caprock of the eastern tectonic zone is thinner than any other region in Songliao Basin, the general conditions of petroleum geological is not well. With a series succeed petroleum exploration had made in the Yushu Fault-Depression, Lishu Fault-Depression and Dehui Fault-Depression, meanwhile the Suihua Sag also develop well petroleum conditions, all of them indicated that this region contain abundant hydrocarbon resources. But now lack of the research of sedimentary characteristic and sedimentary evolutionary regular of the eastern tectonic zone in Songliao Basin, it has make a lot of shortage in petroleum exploration and resource assessment. In order to research the sedimentary characteristic of five tectonic periods in Cretaceous, this paper mainly by means of the field outcrop measurement data methods, combining with drilling data and predecessors' achievements that has achieved to know the regular of sedimentary characteristic and the sedimentary context evolutionary in Cretaceous of eastern tectonic zone in Songliao Basin.