In order to clarify the reservoir forming model of Fuyu oil layer in Qijia-Gulong area, based on the interpretation and analysis of 3D seismic and logging data, the typical sections in the east–west and north–south directions are selected. The structure and sedimentary characteristics of the study area are analyzed, the paleogeomorphology, sedimentary facies, sandstone thickness and the matching relationship with synsedimentary faults of Fuyu oil layer are defined, and the process of oil and gas generation and storage is studied by using burial history, thermal evolution history and hydrocarbon generation history, The results show that: (1) Qijia-Gulong area has a “binary structure” of lower fault and upper depression, and the study area entered the depression stage during the deposition of Quantou Formation, depositing meandering river delta. (2) Paleogeomorphology and syndepositional faults jointly control the distribution of river channels. During the sedimentary period of Quantou Formation, gentle slopes were developed in the west of the study area, and sand bodies were generally distributed from west to East. Syndepositional faults locally control the trend of river channels and the enrichment of sand bodies. (3) At the end of the sedimentary period of Nenjiang Formation, the burial depth of mudstone in the first-Member of Qingshankou Formation reached 1500 m, large-scale hydrocarbon generation and overpressure were formed, and oil and gas were discharged down to Fuyu reservoir through oil source faults. (4) Oil and gas migrate to the high part of the structure through fault and sand body, and accumulate and form oil–gas reservoirs in the footwall of the reverse fault and the “uplift in depression” structure formed by inversion. This study elucidates the paleogeomorphology, sedimentary facies, sandstone thickness and the matching relationship with sedimentary faults of Fuyu oil layer in Qijia-Gulong area, and summarized the tectonic reservoir control mode in the study area.