Spine surgical instrument and surgical robot system employing the same

Surgical instruments for the spine includes a tool, tool holder and tool holder guide. The drilling tool is inserted into the vertebral body of the patient. The tool holder is engaged with the holding tool and the tool, and by a first external force that is provided from the outside with the rotating tool to move forward. The tool holder guide, are arranged so as to surround at least a portion of the tool holder are joined to detachably with the tool holder when the tool holder and be welding tool by receiving a first external force from the holder to move in the forward direction, provided in the tool holder from outside the separated rearwardly from the tool holder, the tool to be released from the affected area by the second external force. Accordingly, it is possible to prevent the risk of the patient during the procedure.