Abstract: A manipulator system includes a treatment unit treating a subject, an imaging unit capturing the subject and the treatment unit, a display unit displaying an image captured by the imaging unit, a display unit driving unit supporting and moving the display unit, an operation unit operating the treatment unit, an operation unit driving unit supporting and moving the operation unit, and a control unit controlling the display unit driving unit and the operation unit driving unit to bring a relative positional relationship between the display unit and the operation unit closer to a relative positional relationship between the treatment unit and the imaging unit. This allows intuitive operation of the treatment unit displayed on the display unit even if an observation direction of the subject is switched.