Most oil fields in the eastern part of China have entered development stages with high water. In order to solve the problem that the mothball reserve of Chinese petroleum is not enough, it is  necessary to undertake the petroleum exploration in deep burial strata. Recent study shows that reservoir sandstones in or near abnormal high temperature and pressure are favourable for petroleum accumulation. Therefore, the spatial distribution of reservoir sandbodies of deep burial strata is main research content to find subtle trap of deep burial strata. On the basis of depositional characteristics of deep burial strata of the Shahejie Formation in eastern and western depressions of Liaohe oil field, three depositional systems are identified as following: fan delta, shore to shallow lake and semi deep lake to sub lacustrine fan. The distribution of sandbodies in the Shahejie Formation in time and space is studied in details, and the cycle of sedimentary sequence and the rhythm of depositional sandbodies in the study area are analyzed. The three sub age's depositional models of the Shahejie Formation are set up based on the evolution history of basin structure and the depositional filling process.