The utility model discloses a clamping device suitable for industrial robot, including locating plate, motor, grip block, cylinder and grip block, its characterized in that: the motor setting on the locating plate, the grip block setting on the transmission shaft, the cylinder setting on the loading board to be provided with on the cylinder and adjust pole, connecting wire, the grip block middle part set up in the spread groove. The utility model discloses be provided with the loading board on the grip block, the spread groove, be provided with the cylinder on the loading board, and be provided with the connecting axle in the spread groove, be connected grip block and the connecting axle in the spread groove, and with the slider on the grip block through the adjusting lever connection of round pin axle with the cylinder, adjust the pole through cylinder control, can promote the slider slides on the grip block, the grip block passes through the spread groove internal rotation that the connecting axle can be on the grip block, and then can improve the firmness of work piece in the grip block that needs processing, the stability of reinforcing work piece, the qualities of the processing of work piece are improved.