Concrete stair structure

A concrete stair structure reduces weight of a concrete stair, material waste and construction cost. According to the technical scheme, the concrete stair structure comprises an inclined stair plate and stepping stairs, wherein the stepping stairs are continuously arranged along the stair plate, a set of stair plate hollowed-out holes are formed in the stair plate in the inclined direction, stepping stair hollowed-out holes are formed in the stepping stairs in the horizontal direction, and the stair plate and the stepping stairs are of the integral concrete stair structure. The concrete stair structure has the advantages of being simple in structure and convenient to construct, and reducing the weight of the concrete stair, material waste and the construction cost.