A cell forming device, including a first platform configured to carry a first substrate, a second platform configured to carry a second substrate, and a pre-alignment mechanism. The first platform includes a first suction surface and a second suction surface arranged opposite to each other and configured to attach the first substrate. The pre-alignment mechanism is configured to adjust a position of the first platform to pre-align the first substrate with the second substrate. The cell forming device further includes a turn-over mechanism configured to turn the first platform over to turn the first substrate over, an alignment mechanism configured to adjust a position of the second platform to align the turned first substrate with the second substrate, and a cell forming mechanism configured to move the first substrate to form a cell with the second substrate.