The present invention relates to an assistant robot for spine surgery, including: a surgical tool support provided with a rotating body to which the surgical tool is penetratingly coupled； a handle provided at one side of the surgical tool support； a driving member configured to rotate the rotating body； and a linear guide provided at the other side of the surgical tool support so as to move the surgical tool forward and backward. Accordingly, the surgical tool can smoothly move without vibration when moving forward and backward, and can be automatically rotated with uniform force so as to enable sophisticated surgery.
