An apparatus that is configured to manufacture a stacked electrode where anode sheets and cathode sheets are stacked with a separator in between, comprising: a first unit that is configured to fold a continuous separator onto a first region; and a second unit that is configured to alternately supply an anode sheet and a cathode sheet to the first region in synchronization with folding of the continuous separator by the first unit, wherein the first unit includes a first wall surface and a second wall surface whose lengths are substantially equal to a folded length and are configured to fold over the continuous separator onto the first region in a state where the continuous separator is held by suction alternately on the first wall surface and the second wall surface; wherein the first wall surface and the second wall surface are disposed on both sides of the first region and are configured to be alternately lowered onto and reversed from the first region; wherein the first wall surface includes a leading end that is configured to guide the continuous separator to a base end of the second wall surface when the first wall surface has been lowered, and the second wall surface includes a leading end that is configured to guide the continuous separator to a base end of the first wall surface when the second wall surface has been lowered; wherein the first unit further includes a third wall surface that is configured to press the continuous separator onto the second wall surface when the first wall surface has been lowered, and a fourth wall surface that is configured to press the continuous separator onto the first wall surface when the second wall surface has been lowered; wherein the apparatus further comprises a supplying unit that is configured to supply the continuous separator to the first wall surface and the second wall surface in a state where the continuous separator is under tension. a first unit that is configured to fold a continuous separator onto a first region; and a second unit that is configured to alternately supply an anode sheet and a cathode sheet to the first region in synchronization with folding of the continuous separator by the first unit, wherein the first unit includes a first wall surface and a second wall surface whose lengths are substantially equal to a folded length and are configured to fold over the continuous separator onto the first region in a state where the continuous separator is held by suction alternately on the first wall surface and the second wall surface; wherein the first wall surface and the second wall surface are disposed on both sides of the first region and are configured to be alternately lowered onto and reversed from the first region; wherein the first wall surface includes a leading end that is configured to guide the continuous separator to a base end of the second wall surface when the first wall surface has been lowered, and the second wall surface includes a leading end that is configured to guide the continuous separator to a base end of the first wall surface when the second wall surface has been lowered; wherein the first unit further includes a third wall surface that is configured to press the continuous separator onto the second wall surface when the first wall surface has been lowered, and a fourth wall surface that is configured to press the continuous separator onto the first wall surface when the second wall surface has been lowered; wherein the apparatus further comprises a supplying unit that is configured to supply the continuous separator to the first wall surface and the second wall surface in a state where the continuous separator is under tension.