Abstract: An apparatus for continuously and automatically measuring deformation and warp of a shaped electrode plate for electrolysis before the electrode plate includes means for lifting shaped electrode plates 1 hanging from crossbars 2 one by one to a predetermined measurement position by a suspending apparatus having a hanger mechanism and adjusting it about a measurement vertical plane position; for so freely suspending the electrode plate 1 vertically about the underside of a crossbar 2 that the electrode plate is not subject to deformation caused by the influence of its own weight or external forces; and a computing device 23 for continuously scanning the flatness of the electrode plate 1 by a moving mechanism which moves sensors 11a, 11b which measure distances between the electrode plate 1 and planes parallel to and facing the front and rear sides of the electrode plate 1 respectively without making contact with the electrode plate horizontally and vertically over those planes and A/D converting and analyzing