Bag opening and folding device

The utility model provides a bag opening and folding device which is simple in structure, low in production cost and capable of opening a folding bag conveniently and folding the folding bag neatly, and comprises four first processing pieces and two second processing pieces which are symmetrically arranged, and the first processing pieces and the second processing pieces are both movably arranged on a machine frame. The four first processing pieces are divided into a left group and a right group in pairs, a driving mechanism used for driving the four first processing pieces and the two second processing pieces to move is arranged on the machine frame, and two third clamping pieces which can slide oppositely and are used for clamping packaging bags closed through the bag opening and folding device can be arranged on the machine frame. A plurality of oppositely arranged first suction cups are oppositely arranged on the rack in a front-back sliding mode, the oppositely arranged first suction cups can slide in th