Workpiece support system and workpiece support method

A workpiece support method in which a workpiece support system is used, the workpiece support system comprising:

• a plurality of rods that are extendable and retractable in an axial direction,
• a holder rotatably placed in an upper end portion of each of the rods, to hold a workpiece,
• a first lock part that keeps an extended/retracted position of the rod in the axial direction, and
• a position adjustment device including a hand portion configured to hold the rod or the holder, to perform position control of the hand portion,
• the workpiece support method comprising:
• a step of moving the hand portion, to extend and retract the rod, based on shape data of the workpiece that is recorded in advance, in a state where the rod or the holder is held by the hand portion of the position adjustment device, and
• a step of keeping, by the first lock part, the extended/retracted position of the rod extended and retracted by the position adjustment device.