An electrode stacking device includes a stacking unit that is disposed between a positive electrode conveying unit conveying a separator-equipped positive electrode and a negative electrode conveying unit conveying a negative electrode, and includes a plurality of stages of stacking sections on which the separator-equipped positive electrode and the negative electrode are stacked, a conveying control unit that controls a drive section to hold a plurality of the separator-equipped positive electrodes at height positions corresponding to the plurality of stages of stacking section and controls a drive section to hold a plurality of the negative electrodes at height positions corresponding to the plurality of stages of stacking sections, a push-out unit that simultaneously pushes out the plurality of separator-equipped positive electrodes toward the plurality of stages of stacking sections, and a push-out unit that simultaneously pushes out the plurality of negative electrodes toward the plurality of stages of stacking sections.