A device for driving mechanical griping jaws includes a first board; a screw connected to the first board; a second board connected to the screw and having slots; a driving board mounted around the screw; linkages each having: a first link with a first axis and a second axis, wherein the first axis is pivotally connected to the second board, and a second link with a third axis, a fourth axis and a fifth axis, wherein the third axis is pivotally connected to the driving board, and the fourth axis is pivotally connected to the second axis; connecting boards each being pivotally connected to the fifth axis and passing the corresponding slot; and linear movement modules each having a slide rail and a slider moving along the slide rail and being connected to the connecting board, so as to precisely position the griping jaws and eliminate griping errors.