To easily fill a bone supplementing material in a space formed inside a centrum through an introducing hole formed in a pedicle.

The bone supplementing material introducing device 1 for introducing the bone supplementing material 2 used for restoring broken centrum in the space formed inside the centrum C comprises a tubular body 3 inserted into the introducing hole B formed in the pedicle A and a pressing rod 4 pressing the columnar bone supplementing material 2 inserted into the tubular body 3 in the longitudinal direction of the tubular body 3. The tubular body 3 at least partly comprises an inner surface 3c for acting a bending moment on the bone supplementing material 2 pressed by the pressing rod 4 and moved in the tubular body 3.