The invention relates to a tree-processing device for making firewood, which includes,- a frame (12),- at least one grab (14), arranged to move over at least part of the length of the said frame (12), for moving trees (100),- a cutting device (16) for cutting trees (100),- a splitting device (18) for splitting trees (100),- support means (20) for supporting the frame (12) against the ground, and- suspension means (22) for suspending the tree-processing device from the boom of a work machine.The cutting device (16) is a double-bladed guillotine (82).
