Convey means for pitch-feeding the semiconductor cell to which the conductive tapes have been attached, lead wire processing means for forming-processing the lead wire, provisional pressure-bonding means which is provided at a part opposed to the semiconductor cell that is pitch-fed, holds the lead wires which are forming-processed, repeats provisional pressure-bonding of the lead wires to the conductive tapes provided on the upper surface and lower surface of the semiconductor cell that is pitch-fed, and alternately connects the upper surfaces and lower surfaces of the neighboring semiconductor cells, and main pressure-bonding means which is disposed on a downstream side of the provisional pressure-bonding means in a direction of conveyance of the semiconductor cell, and which mainly pressure-bonds, simultaneously, the paired upper and lower lead wires which have been provisionally pressure-bonded to the upper surface and lower surface of the semiconductor cell.