Structures in foreland basins form a specific geologic condition of hydrocarbon accumulation. The source-reservoir-seal associations are controlled by tectoni c and sedimentary evolvement. Sedimentary series and source-reservoir-seal ass ociations in the foreland basins in central-western China are various, affected by several times tectonization and the superposition of several types of origin al sedimentary basins. According to the sedimentary structure evolvement, three types of source-reservoir-seal associations are divided: Lower source-reservo ir-seal associations, Middle source-reservoir-seal associations and Upper res ervoir-seal associations. The type of self-generating and self-preserving res ervoir is mainly in the Lower and Middle source-reservoir-seal associations, b ecause of the superposed source-reservoir-seal rocks, and the Lower and Middle source-reservoir-seal associations have the best matching of space. The type of lower-generating and upper-reservoiring is mainly in the Upper reservoir-s eal associations, as it has the best matching of hydrocarbon generation stage, s andstone diagenesis stage and effective sealing time. The Upper reservoir-seal associations have the best matching of time, where a large number of oil-gas po ols have been discovered presently.