Remote control robot system includes a master device, slave arm having plurality of control modes including automatic and manual mode, control device configured to operate slave arm, an entering-person sensing device configured to detect entering person into operational area of slave arm, entering-person identifying information acquisition device configured to acquire entering-person identifying information for identifying whether entering person is operator who carries master device, and operation regulating device configured to regulate operation of slave arm based on information acquired from entering-person sensing device and information acquisition device. In automatic mode, operation regulating device regulates operation of slave arm when entering person is detected. In manual mode, operation regulating device allows operation of slave arm to continue when entering person is detected and entering person is operator, and regulates operation of the slave arm when entering person is other than operator.