PROBLEM TO BE SOLVED: To secure resistance to a load of a vertical joint of a robot arm for moving a table on which a patient who has surgery is mounted and reduces a size of the robot arm.SOLUTION: A robot surgery table 100 comprises: a table 1 for mounting a patient; and a multi joint robot arm 2 whose one end is supported to a base 21 fixed to a floor, and the other end supports the table 1 movably. The multi joint robot arm 2 comprises plural joints containing vertical joints 221, 223 capable of rotating around a rotation axial line in a horizontal direction, the vertical joints 221, 223 comprise a first motor 4a, a first reduction gear 6b and second reduction gear 6c which are provided in parallel and whose input rotation shafts are connected on a same shaft. The first and second reduction gears 6b, 6c are configured so that, respective output rotation shafts are arranged on a rotation axial line in a horizontal direction of the vertical joints 221, 223.SELECTED DRAWING: Figure 4
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