Provided is a vane type foundation structure in which a vane mounted on the ground realizes a stable support effect. A vane-type substructure includes a vane, a loading section, and a tenon. The tenon 30 is provided at a predetermined height of the loading section 20 and protrudes horizontally around the loading section 20. The wing plate 10 is installed horizontally with respect to the ground. The loading section 20 penetrates the wing plate 10 upright and is mounted on the wing plate 10 through the tenon 30, so that the wing plate 10 provides stability when the loading section 20 applies a loading load. [Selection diagram] Fig. 1
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