To provide a bridging device for conveyance capable of facilitating loading and unloading work by following fluctuation of a step between a load-carrying platform of a truck and a floor surface and to provide its pallet loader.

This bridging device 10 for conveyance receives a cargo A on a pallet P conveyed by the pallet loader 9 from the load-carrying platform of the truck. The bridging device 10 for conveyance has a top plate 15 for receiving the cargo A from the truck 1. The top plate 15 is constituted to ascend and descend freely. The top plate 15 is provided with a conveyance roller 16 for conveying the pallet P on which the cargo A is loaded and a guide rail 17 for guiding the pallet loader 9.