The invention discloses a greening concrete structure and a preparation method thereof. The greening concrete structure comprises concrete column-shaped bodies, a concrete surface layer and a concretepouring layer, wherein the concrete column-shaped bodies are arranged and uniformly distributed on the concrete surface layer, the concrete surface layer and the concrete pouring layer are integrallycast and formed, columnar body bases are arranged at the bottom of the concrete column-shaped bodies, and greening concrete filling rings are arranged on the side edges of the lower parts of the concrete column-shaped bodies. The preparation method comprises the following steps of preparing a mold, arranging the filling rings, and laying and vibrating and pressing. The preparation method has theadvantages that green plant planting holes are formed in concrete, and special greening concrete is arranged inside, so that the growth of plants is facilitated; and the greening concrete filling rings can be softened in the vegetation growth process, so that the rooting of the vegetation is facilitated, and the concrete pavement or the ground has a greening function.