Abstract: With analysis on the seismic and well logging data, it is thought that two sets of deep and shallow fracture systems, divided by the unconformity boundary on the top of Paleogene, are developed in the west wing of Chepaizi uplift, with reverse faults developed in the deep and normal faults in the shallow part. The fractures were formed in three stages. The deep fractures control the development of the shallow fractures as well as the Mesozoic deposition. The Jurassic sand bodies and fractures in the fault trough are important pathways for oil-gas migration. According to the sealing ability analysis, the shallow normal faults serve as the main transport pathways in S1 member but the barriers in S2, while the deep reverse faults are mainly carriers in Jurassic. Fractures in different positions also differ in reservoir-forming control functions. The faults control the effectiveness of entrapment, provide migration pathways and connect oil-gas resources between deep and shallow, thus control the distribution. Based on the analysis above, it is concluded that there are three oil-gas migration pathways in the west wing of Chepaizi uplift.