Abstract: Moliqing depression is a secondary Yitong Basin tectonic unit, with basement morphology, distribution of faults, stratigraphic structural characteristics, the history of tectonic evolution, basin oil and gas exploration status, etc. Moliqing depression can be further divided into the Northwest margin fault fold belt, backing depression, Xiaogushan fault zone, such as Eagle's Nest Uplift three tectonic units. Moliqing controlled the development of depression nearly parallel to the east and west two boundary faults, the northwest edge and the southeast boundary fault. Yitong Basin faults is the main structural types, including the control basin boundary fault, the basin produced during the development of an internal fault and post-compression and basin inversion uplift the formation of basement faults, which form a large number of scale range, to the different, varied in nature, the formation of the complex fault system in different periods. Analysis of the shape of the structural trap, trap formation and destruction times, combined with hydrocarbon generation and expulsion time and the effectiveness of hydrocarbon migration pathway analysis, the effectiveness of structural traps, basin oil and gas resources make a reasonable assessment of prospects.