Based on drilling and logging data, copying method was used to recover the paleogeomorphology of Jurassic in Zhenyuan Oilfield. By analyzing the relation between reservoir distribution and paleogeomorphology, this paper defined the controlling effect of paleogeomorphology on hydrocarbon accumulation, and established the hydrocarbon accumulation model of Jurassic in Zhenyuan Oilfield. The result shows that there mainly developed 5 types of paleogeomorphology units in Zhenyuan Oilfield, including valley, incised valley, highland, clinoform and mound. The Jurassic reservoir in Zhenyuan Oilfield is controlled by ancient landform, and mainly distributed in the erosion highland periphery of ancient landform and the front as well as the mouth of slopes. Ancient landform is favorable for reservoir formation: incised-valley controls the hydrocarbon migration channel, clinoform affects the types and distribution of reservoir sandstone, and differential compaction between highland controls the relatively high-points in structure. The models of Jurassic hydrocarbon accumulation are mainly slope-mouth, mound and ancient highland in Zhenyuan Oilfield.