Abstract: A series of exploration wells targeted at shale oil have been deployed in Dongying sag and Zhanhua sag of Shengli oilfield since 2011. But the shale oil production rate can’t achieve the expected results, which indicates the understanding about the continental shale oil accumulation in Dongying and Zhanhua sags are not clear. Taking the shale oil wells in the 2 sags and combining mathematical statistics, well analysis and experimental simulation, the paper considers that the accumulation and production of the shale oil in the areas are mainly controlled by four factors such as lithofacies, fracture, mobility of shale oil and formation pressure. The boundary conditions of these factors favorable for shale oil enrichment are analyzed and a comprehensive evaluation method suitable for lacustrine shale oil evaluation is established based on single factor evaluation of lithofacies, fracture, mobility and formation pressure and multi?factor combined evaluation of shale oil sweet spot, which effectively improves the prediction accuracy for shale oil and forecasts the favorable area of sweet spot. The study shows good potential for shale oil exploration in Dongying sag and Zhanhua sag