The invention discloses a clamping device for industrial automation. The clamping device comprises a fixing block, the upper surface of the fixing block is provided with two symmetrical sliding grooves, sliding blocks matched with the sliding grooves are arranged in the sliding grooves in a clamped connection mode correspondingly, each sliding block is internally provided with a cavity, first movable rods are placed inside the cavities correspondingly, the top ends of the two first movable rods penetrate through the two cavities and extend to the positions above the sliding blocks, and movableplates matched with the sliding blocks are placed inside the sliding blocks correspondingly. According to the clamping device for industrial automation, since a forward-reverse rotation motor is arranged, the two sliding blocks are made to be close to each other under the effect of push rods, a screw rod and a screw ring, and workpieces can be clamped in the horizontal direction conveniently; since sliding rods are arranged, under the effect of springs, the first movable rods and through holes, the first movable rods can ascend and descend, the sliding rods can move left and right, accordingly, the workpieces are fastened in the vertical direction conveniently, and the purpose that the machined workpieces are longitudinally clamped is achieved.