An object of the present invention has a reel supporting device that can easily be exchanged to provide. When the reel is powered by rildae enters in a first position, the reel is raised from the slope to a predetermined position of the reel placed on the pallet side. The reel is in a state raised in a pallet at a distance from the bottom surface is positioned above the bottom surface. In this state, the reel is supported by the reel shaft member. When rildae is moved to retract the rail to the second position, is that a portion away from the bottom surface state from the reel disposed surface on the reel, the pallet by a movement. Thus, the reel is supported by the shaft and around its center, and a rotatable state. In this state, while rotating the reel can be released or the like on the linear body of the wire reel. Therefore, it is possible to manufacture the products that require by the wire. When the pay-off of the linear body is completed, it rildae the reel by the action of the reverse order and can be moved out. Therefore, without using a large apparatus such as a crane it can be easily exchange capacity of the reel.