There is provided a conveying operation method and a conveying operation device that can continue an accurate operation on a workpiece (2) to prevent a reduction in production efficiency in conveying a workpiece (2) and performing a predetermined operation on the workpiece (2) by operation means even if conveyance of the workpiece (2) is stopped during the operation on the workpiece (2) by the operation means. The workpiece (2) is conveyed by workpiece conveying means (3), a movable stand (9) is moved in synchronization with the workpiece conveying means (3) in operation areas A to H provided in a conveying path (1), and a predetermined operation is performed on the workpiece (2) by operation means provided on the movable stand (9). When the movement of the workpiece conveying means (3) is stopped, in the operation areas A to H, the movable stand (9) is stopped in synchronization with the workpiece conveying means (3) to continue the predetermined operation on the workpiece (2) and complete one cycle operation. When an operation different from a normal operation is performed on the workpiece (2), the workpiece (2) is retracted to a position different from the conveying path (1) while being supported by the movable stand (9).
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