A pallet inspection device that is configured to be attached to a conveyor and configured to inspect a pallet that is configured to be transported in a predetermined transportation direction while the pallet is on a transportation surface of the conveyor, wherein with a width direction being a direction orthogonal to the transportation direction as seen in a vertical direction aligned with the vertical direction, a first direction being a direction of the pallet in a state of being transported by the conveyor which direction is along the transportation direction, and a second direction being a direction of the pallet in a state of being transported by the conveyor which direction is along the width direction, the pallet is configured to be transported to storage shelves by the conveyor, and is configured to be housed in the storage shelves while the pallet is in a state of being supported from below by a pair of shelf-side support surfaces; with reference to an orientation of the pallet in a state of being housed in the storage shelves, the pair of shelf-side support surfaces extend in the second direction and are separate from each other in the first direction by a predetermined separation distance; the pallet inspection device includes a first lift member, a second lift member, a raising and lowering mechanism, and an inspection unit configured to be attached to the conveyor; the first lift member has a first support surface on which a pallet bottom surface, which is a bottom surface of the pallet, is to be supported; the second lift member has a second support surface on which the pallet bottom surface is to be supported; the raising and lowering mechanism is configured to raise and lower the first lift member and the second lift member between a retracted position, at which the first support surface and the second support surface are lower than the transportation surface, and a projecting position, at which the first support surface and the second support surface are higher than the transportation surface; the first support surface and the second support surface each extend in the width direction and are separate from each other in the transportation direction by a predetermined setting distance; the setting distance corresponds to the separation distance of the pair of shelf-side support surfaces; and the inspection unit includes a sensor configured to inspect the pallet for bending while the pallet is supported by the first support surface and the second support surface at the projecting position. wherein with a width direction being a direction orthogonal to the transportation direction as seen in a vertical direction aligned with the vertical direction, a first direction being a direction of the pallet in a state of being transported by the conveyor which direction is along the transportation direction, and a second direction being a direction of the pallet in a state of being transported by the conveyor which direction is along the width direction, the pallet is configured to be transported to storage shelves by the conveyor, and is configured to be housed in the storage shelves while the pallet is in a state of being supported from below by a pair of shelf-side support surfaces; with reference to an orientation of the pallet in a state of being housed in the storage shelves, the pair of shelf-side support surfaces extend in the second direction and are separate from each other in the first direction by a predetermined separation distance; the pallet inspection device includes a first lift member, a second lift member, a raising and lowering mechanism, and an inspection unit configured to be attached to the conveyor; the first lift member has a first support surface on which a pallet bottom surface, which is a bottom surface of the pallet, is to be supported; the second lift member has a second support surface on which the pallet bottom surface is to be supported; the raising and lowering mechanism is configured to raise and lower the first lift member and the second lift member between a retracted position, at which the first support surface and the second support surface are lower than the transportation surface, and a projecting position, at which the first support surface and the second support surface are higher than the transportation surface; the first support surface and the second support surface each extend in the width direction and are separate from each other in the transportation direction by a predetermined setting distance; the setting distance corresponds to the separation distance of the pair of shelf-side support surfaces; and the inspection unit includes a sensor configured to inspect the pallet for bending while the pallet is supported by the first support surface and the second support surface at the projecting position.