To provide a product irregularity determination device that makes an irregularity determination of a plurality of workpieces as one set without moving an imaging unit, removes only the workpiece not meeting a setting condition, and enables reduction in lead time.SOLUTION: A product irregularity determination device 1 comprises: a first half-conveyance part 10 and second half-conveyance part 50 that convey a conveyance path in a conveyance direction M with a plurality of workpieces W put in a workpiece loading part 20 as one set; a front face/rear face reverse unit 40 that reverses a front face and a rear face of the workpiece W between the first half-conveyance part 10 and the second half-conveyance part 50; imaging units 31 and 61 that are composed of a plurality of light emitting parts L and a plurality of imaging bodies C; a workpiece selection part 70 that determines presence or absence of surface irregularity of the workpiece on the basis of image information to be transmitted from the imaging units 31 and 61, and removes the workpiece not meeting a setting condition from the conveyance path; and a control unit 80 that controls the first half-conveyance part 10, the front face/rear face reverse part 40, the second half-conveyance part 50 and the workpiece selection part 70.SELECTED DRAWING: Figure 1
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