The present invention addresses the problem of providing a workpiece processing system (1) with which the number of sets of unprocessed workpieces (W) can be increased. The workpiece processing system (1) is characterized in being provided with: at least one machine tool (3) for performing a specified process on workpieces (W); multiple workpiece stockers (4L, 4R), which are disposed at positions on either side of the machine tool (3) and each of which holds unprocessed workpieces (W) prior to processing of the workpieces (W); and a workpiece conveyance device (2) capable of conveying workpieces(W) between the workpiece stockers (4L, 4R) and the machine tool (3).