The utility model discloses a pile foundation-flexible reinforced cushion composite bearing-platform type sheet pile structure. The pile foundation-flexible reinforced cushion composite bearing-platform type sheet pile structure comprises a front sheet pile wall, an anchorage wall, a connection pull rod connecting the front sheet pile wall with the anchorage wall, and a bearing platform located between the front sheet pile wall and the anchorage wall. The pile foundation-flexible reinforced cushion composite bearing-platform type sheet pile structure is mainly characterized in that the bearing platform comprises a granular mixture reinforced cushion and pile foundations; the granular mixture reinforced cushion is composed of a granular mixture material pavement and geosynthetic reinforcing ribs embedded in the pavement; the at least two rows of pile foundations are located below the reinforced cushion and used for supporting the reinforced cushion. The pile foundation-flexible reinforced cushion composite bearing-platform type sheet pile structure disclosed by the utility model is simple in construction, material-saving, balance in load stress, firm and durable in structure, and suitable for constructing large-tonnage, large-size and deepwater-type wharfs.