To provide a device having a simple and strong structure capable of loading a load on a deck by a crane without being disturbed by a wing which is flipped up and opened, in a truck having a wing type deck.

In the wing type truck provided with a plurality of transporting means extending in a width direction on a floor surface of the deck of which upper part is covered by a load box, the transporting means consists of a fixed pallet fixed to the deck and a movable pallet capable of moving in and out of the deck by sliding on the fixed pallet.