The utility model discloses a clamping device for an industrial steel plate cutting machine. Including a base, two symmetrical containing box bodies are fixedly connected to the upper surface of the base. First bearings are fixedly embedded in the middles of the side faces, away from each other, of the two containing box bodies, a movable plate is placed in each containing box body, a threaded pipe is fixedly embedded in the left side face of each movable plate, and threaded rods are placed on the sides, away from each other, of the two containing box bodies. The utility model discloses a clamping device for an industrial steel plate cutting machine. A second linkage wheel is arranged; first linkage wheel used in cooperation, the threaded rod can rotate more stably; and through the arrangement of a movable plate, a connecting pipe and a connecting rod which are used in cooperation, the stability of a clamping plate is improved, the problem that the device shakes in the working processis avoided, the problem that workpieces are scrapped due to the fact that one side of a cut steel plate is irregular is avoided, and the steel plate cutting device is convenient to use.