This invention relates to a base plate assemble method and its device, which comprises the following steps: to send into the upper and down base plates to the vacuum room upper and down machine benches by use of the first and second transmission elements; the first transmission element has the first upper acetabula and first down acetabula and the second transmission element has multiple second upper acetabula; The second transmission element transmits the down base plate into the down machine bench , while the first element can transmit the former base plate combinations. |