The invention discloses a porous vegetation concrete, which is prepared from sulfoaluminate cement paste, waterlogged ceramsite, and super water absorbent resin beads, which have absorbed a fertilizer solution and is prepared by steps of mixing, casting, moulding, and curing. The preparation method comprises the following steps: (1) preprocessing ceramsite; (2) preprocessing super water absorbent resin beads; (3) weighing each component; (4) mixing raw materials; (5) casting and moulding; and (6) curing. The provided vegetation concrete has the following characteristics: (1) the workability of newly mixed slurry is good and the slurry is easy for casting and moulding; (2) the porosity is large, the pore connecting degree is high, and thus the concrete is beneficial for the growth of plant roots and supplies enough nutrients for plants at the same time; and (3) the pore solution alkalinity is low and the growth of plants is barely influenced.