In a robot system for endoscopic treatment, a gripping force detection unit configured to detect gripping force is provided at a gripping unit (12) configured to open and close by an operation of wire (17) from a surgeons front side, and a treatment instrument control unit (7) is configured to instruct a treatment instrument drive unit (3) on the operation of wire (17) configured to drive the gripping unit (12) so that the gripping force detected by the gripping force detection unit falls within a range of a predetermined threshold when the gripping unit in a gripping state is moved.
