is defined as an axis orthogonal to the x axis and the y axis thus the control unit 6 controls the operating manipulators 5 on the basis of the input coordinates of the target site p so that the tips of the instruments 10 are disposed in the vicinity of the target site p that is in the surgical manipulator system 1 according to this embodiment because the coordinate systems of the manipulators 3 to 5 are associated with one another and the sizes etc of the links 3 b to 5 b that constitute the manipulators 3 to 5 are known when the target site p is specified the operating angles of the joints 5 a of the operating manipulators 5 can be calculated backward so that the tips of the instruments 10 are disposed in the vicinity of the target site p as shown in fig8 as a result in a case where there are a plurality of the target sites p to be treated at given coordinates or in a case where the same target site p must be treated a plurality of times for example for an anastomosis treatment the treatment can be performed automatically without the operator x visually moving the instruments 10 to the xyz coordinates as the need arises accordingly this has the advantage that the operating manipulators 5 can be operated easily and quickly thus reducing the burden imposed on the operator x in this embodiment the indicator that is used as a reference to specify the target site p to be treated.