In a master-slave manipulator system, manipulation device can be manipulated intuitively even when clutch manipulation is performed. A master-slave manipulator system includes: mode switching device (12) for switching between a master-slave mode, in which the slave manipulator (1, 2) is controlled, and an observation device visual field tracking clutch mode, in which transmission of an operation command to the slave manipulator (1, 2) from the manipulation device (9, 10) is cut off to move the manipulation device to an optional position and orientation a switching unit control section (14) that reads a signal of the mode switching device (12) to forward a mode signal to the manipulation device control section (17) and a visual field transform section (40) that forwards a third control command to the manipulator control section (17) and forwards a fourth control command to the visual field change control section (18) on the basis of an operation command read by the manipulation device control section (15) at the time of the observation device visual field tracking clutch mode so as to make an agreement between a direction of motion of an image of the slave manipulator (1, 2) displayed on the display device (6) and a direction of manipulation of the manipulation device (9, 10).
