The disclosed vertebral spacer is used by being inserted between one vertebra (101) and another vertebra (102) (the intervertebral space). Said vertebral spacer (1) has a block body (2) which, provided with a pair of contact surfaces contacting each of the vertebrae (101, 102), is configured from titanium or a titanium alloy as the main material. The block body (2) has needle-form bodies (40) forming a needle shape at both ends, and a porous part (21) which, provided with through-holes (22) penetrating in the thickness direction, has at least a surface porosity higher than that of the needle-form body (40). The needle-form bodies (40) are inserted into the through-holes (22) such that both ends of said needle-form bodies protrude from both contact surfaces, and the aforementioned both ends thereby configure protrusions (41) that function to fix the block body (2) between the vertebrae. By this means, the size of the space between the two vertebrae (the intervertebral space) can be properly maintained. Further, damage can be accurately prevented regardless of the clinical case and the position of the intervertebral space, and earlier bone fusion with the vertebrae can be achieved.
