To facilitate transfer of a plate from a transfer table to the side of a plate working machine by preventing a transfer table from positioning at a position lower than a floor face.

The storing system is constructed so that a storing frame 11 is erected near a plate working machine 3, the storing frame 11 is constructed by integrating plural frames 13 arrayed in the longitudinal direction, plural storing parts 17 are arranged in the vertical direction to each frame 13, a transfer table 21 to transfer a plate stock W to the side of plate working machine 3 is stored to any storing part 17 in the frame 13 nearest to the plate working machine 3 and a storing position of transfer table 21 is changeable among plural storing parts 17 in the frame 13 at nearest.