Based on shale oil reservoir types, effective single layer thickness distribution of conventional oil and gas in the area with proved reserves, and thickness distribution and proportion of interbed in wells drilling at shale oil, the shale oil enrichment types in Jiyang depression are divided into matrix, fracture and interbed with a thickness not more than 2.5 m and a proportion not more than 20%. By typical well analyzing and mathematical statistics, factors for shale oil enrichment were analyzed. Enrichment factors of the matrix type include lithofacies, reservoir performance, abnormal pressures and shale oil mobility. Organic-rich layered muddy limestone and organic-rich lime mudstone are the most favorable lithofacies. The porosity of oil charging segment is more than 3%. And there is a significant positive correlation between reservoir properties and the daily outputs. The low-pressure area among abnormal high pressure areas is relatively enriched in shale oil. The mobility of shale oil is good while S1/ TOC >1. Enrichment factors of the fractured type include lithofacies,fracture development extent and fault sealing, and the layered lithofacies is easy to form net fracture and controls vertical distribution of fracture-type shale oil. Fractures develop when fracture development coefficient is more than 0.2. High-yield wells distribute in hanging wall of fault where the distance between well and fault is less than 1.2 km and fault throw is more than100 m. Shale oil enriches in abnormal high pressure area (pressure coefficient>1.3) which is in good preservation conditions. Enrichment factors of the interbed type include reservoir property, source rock expulsion intensity and abnormal pressure.