The utility model discloses a stock foundation structure, including the reinforced concrete foundation cushion cap, characteristics are that the bottom of reinforced concrete foundation cushion cap is fixed with 4 central stocks that distribute with the axial symmetry and 4N roots and distributes at central stock outlying periphery stock, the center stock inclines just inwards and the contained angle between the reinforced concrete foundation cushion cap horizontal plane just is less than 90 for being greater than 60, peripheral stock inclines just outwards and the contained angle between the reinforced concrete foundation cushion cap horizontal plane just is less than 120 for being greater than 90, wherein the N value is 2, 3 or 4, all adopt steel bar anchoring to link between reinforced concrete foundation cushion cap and the central stock and between reinforced concrete foundation cushion cap and the peripheral stock, the advantage is the stock basis focus stability that can stabilize, the horizontal bearing capacity on stock basis has been increaseed.